Anatomy & Physiology Chapter 1-3 Flashcards
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Questions and Answers

What are the 5 areas of life that work together to maintain homeostasis?

  • Reproduction (correct)
  • Responsiveness (correct)
  • Growth (correct)
  • Movement (correct)
  • Metabolism (correct)
  • What is the definition of anatomy?

    Cutting open; structure

    What does physiology study?

    Function

    What is gross anatomy?

    <p>What can be seen and studied with the naked eye</p> Signup and view all the answers

    What is microscopic anatomy?

    <p>Use of microscopes, with limitations</p> Signup and view all the answers

    What are the levels of organization in the body?

    <p>Organ</p> Signup and view all the answers

    What is homeostatic regulation?

    <p>The body's adjustments to changes that help preserve homeostasis</p> Signup and view all the answers

    What is negative feedback?

    <p>A response to a stimulus 'corrects' the situation</p> Signup and view all the answers

    What is positive feedback?

    <p>Stimulus produces a response that reinforces that stimulus</p> Signup and view all the answers

    What is the function of the integumentary system?

    <p>Protects against environmental hazards; helps control body temperature</p> Signup and view all the answers

    What is the primary function of the nervous system?

    <p>Directs immediate response to stimuli, usually by coordinating the activities of other organ systems</p> Signup and view all the answers

    What is the role of the digestive system?

    <p>Processes food and absorbs nutrients</p> Signup and view all the answers

    What does the urinary system do?

    <p>Eliminates excess water, salts, and waste products</p> Signup and view all the answers

    What does the reproductive system produce?

    <p>Sex cells and hormones</p> Signup and view all the answers

    What is the muscular system responsible for?

    <p>Allows for locomotion; provides support; produces heat</p> Signup and view all the answers

    What does the skeletal system provide?

    <p>Support; protects tissues; stores minerals; forms blood</p> Signup and view all the answers

    What is the function of the lymphatic system?

    <p>Defends against infection and disease, returns tissue fluid to the bloodstream</p> Signup and view all the answers

    What does the cardiovascular system transport?

    <p>Cells and dissolved materials, including nutrients, wastes, and gases</p> Signup and view all the answers

    What is the role of the respiratory system?

    <p>Delivers air to sites where gas exchange can occur between the air and circulating blood</p> Signup and view all the answers

    What does the endocrine system direct?

    <p>Long-term changes in activities of other organ systems</p> Signup and view all the answers

    What does the transverse plane divide?

    <p>Divides into superior and inferior</p> Signup and view all the answers

    What does the frontal plane divide?

    <p>Divides into anterior and posterior</p> Signup and view all the answers

    What does the sagittal plane do?

    <p>Cuts into left and right</p> Signup and view all the answers

    What is the ventral body cavity?

    <p>Diaphragm divides cavity into thoracic and abdominopelvic cavity</p> Signup and view all the answers

    What is contained in the abdominopelvic cavity?

    <p>Abdominal cavity, pelvic cavity</p> Signup and view all the answers

    What does thoracic refer to?

    <p>Pericardial cavity, pleural cavities</p> Signup and view all the answers

    What are isotopes?

    <p>If an element contains a different number of neutrons</p> Signup and view all the answers

    What is a covalent bond?

    <p>Molecules formed from the sharing of electrons in the outer shell</p> Signup and view all the answers

    What is an ionic bond?

    <p>Bonds formed by a reaction of anions and cations (non-metal and metal)</p> Signup and view all the answers

    What is a hydrogen bond?

    <p>Formed from hydrogen bonds of one molecule and adjacent molecules</p> Signup and view all the answers

    What is a decomposition reaction?

    <p>AB to A + B</p> Signup and view all the answers

    What is a synthesis reaction?

    <p>A + B to AB</p> Signup and view all the answers

    What are enzymes?

    <p>Substances that accelerate chemical reactions and lower the activation energy</p> Signup and view all the answers

    What is equilibrium?

    <p>A state of balance</p> Signup and view all the answers

    What is activation energy?

    <p>The energy required for a reaction to occur</p> Signup and view all the answers

    What are polar molecules?

    <p>A molecule in which the centroid of the positive charges is different from the centroid of the negative charges</p> Signup and view all the answers

    What are the properties of water?

    <p>Excellent solvent</p> Signup and view all the answers

    What are acids?

    <p>React in solution and increase the number of hydrogen ions</p> Signup and view all the answers

    What are bases?

    <p>React in solution and decrease the number of hydrogen ions</p> Signup and view all the answers

    What are proteins?

    <p>Chains of amino acids</p> Signup and view all the answers

    What are carbohydrates?

    <p>Compound containing carbon, hydrogen, and oxygen in the approximate ratio of C:2H:O (e.g., sugars, starches, and cellulose); Great for stored energy</p> Signup and view all the answers

    What are lipids?

    <p>A group of organic compounds composed mostly of carbon and hydrogen including a proportionately smaller amount of oxygen; are insoluble in water, and serve as a source of stored energy</p> Signup and view all the answers

    What are nucleic acids?

    <p>Macromolecules containing hydrogen, oxygen, nitrogen, carbon, and phosphorus</p> Signup and view all the answers

    What are phospholipids?

    <p>A lipid made up of a glycerol joined to two fatty acids and a phosphate group; has two hydrophobic tails and a polar, hydrophilic head</p> Signup and view all the answers

    What is cell theory?

    <p>Cells are the building blocks of all plants and animals</p> Signup and view all the answers

    What is passive transport?

    <p>Does not require energy - diffusion, osmosis, filtration, facilitated diffusion</p> Signup and view all the answers

    What is active transport?

    <p>Requires energy - carrier-mediated transport</p> Signup and view all the answers

    What is diffusion?

    <p>Movement of molecules from an area of higher concentration to an area of lower concentration</p> Signup and view all the answers

    What is osmosis?

    <p>Diffusion of water through a selectively permeable membrane</p> Signup and view all the answers

    What is facilitated diffusion?

    <p>Movement of specific molecules across cell membranes through protein channels</p> Signup and view all the answers

    What is filtration?

    <p>A process that separates materials based on the size of their particles</p> Signup and view all the answers

    What are exchange pumps?

    <p>Carrier proteins that move ions with counter transport</p> Signup and view all the answers

    What is vesicular transport?

    <p>Movement of material between organelles in the eukaryotic cell via membrane-enclosed vesicles</p> Signup and view all the answers

    What is endocytosis?

    <p>A process in which a cell engulfs extracellular material through an inward folding of its plasma membrane</p> Signup and view all the answers

    What is exocytosis?

    <p>Process by which a cell releases large amounts of material</p> Signup and view all the answers

    What is isotonic?

    <p>Having the same solute concentration as another solution</p> Signup and view all the answers

    What is hypertonic?

    <p>Having a higher osmotic pressure than a comparison solution</p> Signup and view all the answers

    What is hypotonic?

    <p>Having a lower concentration of solute than another solution</p> Signup and view all the answers

    What is chromosome structure?

    <p>DNA tightly coiled around histone proteins to form nucleosomes. Nucleosomes are coiled to form coils, then coiled further to form supercoils</p> Signup and view all the answers

    What is DNA?

    <p>A complex molecule containing the genetic information that makes up the chromosomes</p> Signup and view all the answers

    What is genetic code?

    <p>Collection of codons of mRNA, each of which directs the incorporation of a particular amino acid into a protein during protein synthesis</p> Signup and view all the answers

    What is transcription?

    <p>DNA to RNA (nucleus)</p> Signup and view all the answers

    What is translation?

    <p>RNA to Protein (ribosomes)</p> Signup and view all the answers

    What is central dogma?

    <p>DNA - RNA - proteins</p> Signup and view all the answers

    What occurs during interphase?

    <p>Cell grows, performs its normal functions, and prepares for division; consists of G1, S, and G2 phases</p> Signup and view all the answers

    What is mitosis?

    <p>A process of nuclear division in eukaryotic cells conventionally divided into five stages: prophase, prometaphase, metaphase, anaphase, and telophase. Mitosis conserves chromosome number by equally allocating replicated chromosomes to each of the daughter nuclei.</p> Signup and view all the answers

    What is cytokinesis?

    <p>Division of the cytoplasm during cell division</p> Signup and view all the answers

    What is the cell membrane?

    <p>Provides isolation, protection, sensitivity, and support; controls entrance/exit of materials</p> Signup and view all the answers

    What are inorganic compounds?

    <p>Do not contain carbon or hydrogen</p> Signup and view all the answers

    What are organic compounds?

    <p>Carbon and hydrogen atoms primarily</p> Signup and view all the answers

    What is cytosol?

    <p>Distributes materials by diffusion</p> Signup and view all the answers

    What is the cytoskeleton?

    <p>Provides strength and support; enables movement of cellular structures and materials</p> Signup and view all the answers

    What are centrioles?

    <p>Essential for movement of chromosomes during cell division</p> Signup and view all the answers

    What do ribosomes do?

    <p>Synthesize proteins</p> Signup and view all the answers

    What are proteasomes?

    <p>Break down and recycle damaged or abnormal intracellular proteins</p> Signup and view all the answers

    What does the endoplasmic reticulum synthesize?

    <p>Secretory products; provides intracellular storage and transport</p> Signup and view all the answers

    What does rough ER do?

    <p>Packages newly synthesized proteins</p> Signup and view all the answers

    What does smooth ER synthesize?

    <p>Lipids and carbohydrates</p> Signup and view all the answers

    What is the function of the Golgi apparatus?

    <p>Stores, alters, and packages secretory products; forms lysosomes</p> Signup and view all the answers

    What do lysosomes do?

    <p>Remove damaged organelles or pathogens within cells</p> Signup and view all the answers

    What are peroxisomes?

    <p>Catabolize fats and other organic compounds; neutralize toxic compounds generated in the process</p> Signup and view all the answers

    What are mitochondria responsible for?

    <p>Produce 95% of the ATP required by the cell</p> Signup and view all the answers

    What is the function of the nucleus?

    <p>Controls metabolism; stores and processes genetic information; controls protein synthesis</p> Signup and view all the answers

    What does the nucleolus synthesize?

    <p>RNA and assembles ribosomal subunits</p> Signup and view all the answers

    What do exergonic reactions do?

    Signup and view all the answers

    What is the enzyme-substrate complex?

    <p>Active sites connect with substrates</p> Signup and view all the answers

    What does superior mean?

    <p>Toward the head end or upper part of a structure or the body; above</p> Signup and view all the answers

    What does inferior mean?

    <p>Away from the head end or toward the lower part of a structure of the body; below</p> Signup and view all the answers

    What does anterior mean?

    <p>Toward or at the front of the body; in front of</p> Signup and view all the answers

    What does dorsal mean?

    <p>Toward or at the back of the body; behind</p> Signup and view all the answers

    What does medial mean?

    <p>Toward or at the midline of the body; on the inner side of</p> Signup and view all the answers

    What does lateral mean?

    <p>Away from the midline of the body; on the outer side of</p> Signup and view all the answers

    What does intermediate mean?

    <p>Between a more medial and a more lateral structure</p> Signup and view all the answers

    What does distal mean?

    <p>Farther from the origin of a body part or the point of attachment of a limb to the trunk of the body</p> Signup and view all the answers

    What does superficial mean?

    <p>Toward or at the body surface</p> Signup and view all the answers

    What does deep mean?

    <p>Away from the body surface; more internal</p> Signup and view all the answers

    Study Notes

    Key Concepts in Anatomy and Physiology

    • Responsiveness, Growth, Reproduction, Movement, Metabolism: Essential life processes that work together to uphold homeostasis.
    • Anatomy: Refers to the structure or "cutting open" of an organism.
    • Physiology: Study of function related to biological systems.

    Anatomy Classification

    • Gross Anatomy: Observable structures without the aid of instruments.
    • Microscopic Anatomy: Involves the use of microscopes to study cells and tissues.

    Levels of Organization

    • Hierarchy: Ranges from chemical, cellular, tissue, organ, organ system to organism.

    Homeostasis

    • Homeostatic Regulation: The body's mechanisms to maintain stable internal conditions despite external changes.
    • Negative Feedback: Process that counteracts change, leading to stabilization.
    • Positive Feedback: Amplifies stimulus, promoting greater change (e.g., childbirth).

    Organ Systems and Their Functions

    • Integumentary System: Protects against hazards and regulates body temperature.
    • Nervous System: Coordinates immediate responses to stimuli.
    • Digestive System: Breaks down food and absorbs nutrients.
    • Urinary System: Eliminates excess waste, salts, and water.
    • Reproductive System: Produces gametes and hormones.
    • Muscular System: Facilitates movement, provides support, and generates heat.
    • Skeletal System: Supports and protects organs while storing minerals and forming blood.
    • Lymphatic System: Defends against pathogens and recycles tissue fluid.
    • Cardiovascular System: Transports materials, nutrients, and gases throughout the body.
    • Respiratory System: Conducts gas exchange between air and blood.
    • Endocrine System: Regulates long-term changes and functions in other systems.

    Body Planes and Cavities

    • Transverse Plane: Divides body into superior (upper) and inferior (lower) sections.
    • Frontal (Coronal) Plane: Separates body into anterior (front) and posterior (back) sections.
    • Sagittal Plane: Divides body into left and right.
    • Ventral Body Cavity: Contains thoracic and abdominopelvic cavities, separated by the diaphragm.

    Chemical and Cellular Structure

    • Isotopes: Atoms of the same element with varying neutron counts.
    • Bonds:
      • Covalent Bonds: Formed by sharing electrons.
      • Ionic Bonds: Created by the attraction between ions of opposite charges.
      • Hydrogen Bonds: Attractions between hydrogen and electronegative atoms.
    • Reactions:
      • Decomposition: Breakdown of compounds (AB → A + B).
      • Synthesis: Combination of elements to form compounds (A + B → AB).
    • Enzymes: Biological catalysts that speed up reactions by lowering activation energy.

    Transport Mechanisms

    • Passive Transport: Movement across membranes without energy (e.g., diffusion, osmosis).
    • Active Transport: Requires energy to move substances against concentration gradients.

    Cell Theory

    • Fundamentals:
      • Cells are basic building blocks of organisms.
      • They perform vital functions necessary for life.
      • New cells arise from pre-existing cells.
      • Each cell maintains homeostasis.

    Cellular Components

    • Ribosomes: Sites for protein synthesis.
    • Mitochondria: Produce ATP, the energy currency of the cell.
    • Nucleus: Contains genetic information and regulates cell activities.
    • Endoplasmic Reticulum: Involved in synthesis and transport of proteins and lipids.
    • Golgi Apparatus: Modifies and packages proteins and lipids for secretion or delivery.
    • Lysosomes: Break down waste materials and cellular debris.
    • Peroxisomes: Degrade fatty acids and detoxify harmful substances.

    Genetic Information

    • DNA Structure: Contains genetic codes packed as chromosomes, composed of DNA and histones.
    • Gene Expression:
      • Transcription: Process of synthesizing RNA from DNA.
      • Translation: Conversion of RNA into protein.

    Orientation Terms

    • Superior: Above or towards the head.
    • Inferior: Below or towards the feet.
    • Anterior: Front side of the body.
    • Dorsal: Back side of the body.
    • Medial: Closer to the midline.
    • Lateral: Farther from the midline.
    • Distal: Farther from the center of the body.
    • Superficial: Closer to the surface.
    • Deep: Further away from the surface.

    These study notes provide a comprehensive overview of foundational concepts in anatomy and physiology, emphasizing their interrelatedness and significance in maintaining life.

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    Test your knowledge on key concepts from Chapters 1 to 3 of Anatomy and Physiology. This quiz covers essential terms and definitions that are foundational for understanding human biology and homeostasis.

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