Introduction to Physiology Quiz

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Questions and Answers

Which of the following is NOT a type of tissue found in the human body?

  • Nervous tissue
  • Epithelial tissue
  • Blood tissue (correct)
  • Connective tissue

What is the primary function of muscle tissue?

  • To cover and protect organs and cavities
  • To produce movement (correct)
  • To provide support and structure to the body
  • To transmit signals throughout the body

Which of the following is an example of an organ system?

  • The skin
  • The digestive system (correct)
  • The heart
  • The stomach

Which of the following correctly lists the levels of organization from simplest to most complex?

<p>Atom, Molecule, Cell, Tissue, Organ, Organ system, Organism (B)</p> Signup and view all the answers

Which of the following is NOT a characteristic of a cell?

<p>Movement of the entire organism (B)</p> Signup and view all the answers

Who is considered the father of modern physiology?

<p>Claude Bernard (A)</p> Signup and view all the answers

What is the meaning of the term "milieu interieur" as introduced by Claude Bernard?

<p>The internal environment of a living organism (A)</p> Signup and view all the answers

What is the primary focus of the field of physiology?

<p>The functions and mechanisms of living systems (B)</p> Signup and view all the answers

Which of the following is NOT a function controlled by homeostasis mechanisms?

<p>Eye color (C)</p> Signup and view all the answers

What is the meaning of the term "homeostasis" in the context of human physiology?

<p>The ability to maintain a stable internal environment (D)</p> Signup and view all the answers

What is the correct order of increasing complexity in the structural organization of the human body?

<p>Atoms, molecules, cells, tissues, organs, systems (A)</p> Signup and view all the answers

What is the term used to describe the study of the structure of the human body?

<p>Anatomy (B)</p> Signup and view all the answers

What is the Greek word from which the term "anatomy" is derived?

<p>Anatome (A)</p> Signup and view all the answers

Which system is responsible for the breakdown of food into molecules that can be absorbed by the body?

<p>Digestive (B)</p> Signup and view all the answers

Which of the following is NOT a major organ of the integumentary system?

<p>Bones (A)</p> Signup and view all the answers

What is the primary function of the endocrine system?

<p>Secretion of hormones (A)</p> Signup and view all the answers

Which system is responsible for the movement of the skeleton?

<p>Muscular Skeletal (B)</p> Signup and view all the answers

What is the function of the lymphatic vessels?

<p>Transport lymph throughout the body (A)</p> Signup and view all the answers

Which of the following is a component of the cytoplasm?

<p>Organelles (A)</p> Signup and view all the answers

What is cytology?

<p>The study of the structure and function of cells (A)</p> Signup and view all the answers

The plasma membrane is the outer lining of the cell, separating its internal parts from the external environment. Which of the following is NOT a function of the plasma membrane?

<p>Producing energy for the cell (C)</p> Signup and view all the answers

Which cellular component is directly involved in the synthesis and packaging of proteins for export from the cell?

<p>Golgi complex (A)</p> Signup and view all the answers

Which of the following is NOT a function associated with the endoplasmic reticulum (ER)?

<p>DNA replication (C)</p> Signup and view all the answers

Which cellular structure is primarily responsible for generating energy in the form of ATP?

<p>Mitochondria (D)</p> Signup and view all the answers

Which component of the cytoskeleton is composed of microtubules that are involved in the movement of chromosomes during cell division?

<p>Centrioles (B)</p> Signup and view all the answers

Which of the following statements accurately describes the role of lysosomes in a cell?

<p>They contain enzymes that break down waste materials. (B)</p> Signup and view all the answers

What is the primary function of the endoplasmic reticulum?

<p>Intracellular transport of materials (B)</p> Signup and view all the answers

Which of the following processes is NOT a type of endocytosis?

<p>Exocytosis (B)</p> Signup and view all the answers

What is the primary function of the nucleolus?

<p>Synthesis of ribosomes (B)</p> Signup and view all the answers

Which of the following statements about the sodium-potassium pump is TRUE?

<p>It requires energy from ATP to function. (B)</p> Signup and view all the answers

What is the function of the nuclear membrane?

<p>To regulate the movement of materials between the nucleus and the cytoplasm (B)</p> Signup and view all the answers

What type of cell does NOT have a nucleus?

<p>Red blood cells (B)</p> Signup and view all the answers

What is the term for the process by which a cell takes in large particles or other cells?

<p>Endocytosis (A)</p> Signup and view all the answers

What is the primary function of the plasma membrane?

<p>To regulate the passage of materials into and out of the cell. (A)</p> Signup and view all the answers

Which type of passive transport relies on the random movement of molecules from an area of high concentration to an area of low concentration?

<p>Simple diffusion (C)</p> Signup and view all the answers

What is the primary difference between active transport and passive transport?

<p>Active transport requires energy, while passive transport does not. (D)</p> Signup and view all the answers

Which of the following is an example of facilitated diffusion?

<p>The movement of glucose across the cell membrane using a protein channel. (D)</p> Signup and view all the answers

Which type of transport is used in the kidneys to filter waste products from the blood?

<p>Filtration (B)</p> Signup and view all the answers

What is the function of cholesterol in the plasma membrane?

<p>It helps to regulate the fluidity of the membrane. (D)</p> Signup and view all the answers

How does the plasma membrane maintain the integrity of the cell?

<p>By acting as a barrier to the passage of molecules. (C)</p> Signup and view all the answers

Which of the following is NOT a function of the plasma membrane?

<p>To produce proteins for the cell. (D)</p> Signup and view all the answers

Flashcards

Physiology

The scientific study of functions and mechanisms in a living system.

Anatomy

The study of the structures that make up the body and their relationships.

Homeostasis

The stability of the internal environment despite external changes.

Milieu interieur

Claude Bernard's concept of internal environment stability.

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Levels of organization

Hierarchy of complexity from atoms to complete organisms.

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Medical physiology

Study of physiological functions specifically in humans.

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Animal physiology

Study of physiological functions in animals other than humans.

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Plant physiology

Study of physiological functions in plants.

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Atoms

Basic building blocks of matter, smallest units of elements.

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Molecules

Groups of atoms bonded together, forming the smallest unit of a compound.

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Cell

The smallest independent unit of life, responsible for basic functions.

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Tissue

A group of similar cells working together to perform a specific function.

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Organ

A structure composed of two or more tissue types working together for a specific function.

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Integumentary system

Includes skin, hair, and nails; protects and regulates temperature.

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Nervous system

Consists of the brain, spinal cord, and nerves; regulates body systems.

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Endocrine system

Glands like pituitary and thyroid that secrete hormones.

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Skeletal system

Composed of bones and cartilage; provides movement and support.

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Muscular system

Made up of muscles; facilitates movement of skeleton.

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Circulatory system

Includes the heart and blood vessels; transports blood and lymph.

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Immune system

Defends the body against pathogens; includes bone marrow and lymphoid organs.

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Cell structure

Basic unit of life composed of plasma membrane, cytoplasm, organelles, and inclusions.

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Extracellular matrix

Substances found outside of the cell that support its structure.

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Plasma membrane

A thin bilayer that separates the cell's interior from its environment.

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Selective permeability

The ability of the membrane to allow some substances to pass while blocking others.

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Passive movement

Movement across the membrane that does not require energy.

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Active movement

Movement requiring energy (ATP) to transport substances against the concentration gradient.

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Simple diffusion

Movement of molecules from high concentration to low concentration without energy.

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Facilitated diffusion

Transport of larger molecules through a membrane via protein channels, without energy.

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Active transport

Pumping substances against their gradient; requires ATP energy.

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Endoplasmic Reticulum (ER)

The ER is a network that facilitates intracellular transport and storage of synthesized molecules, with two types: granular (protein synthesis) and agranular (lipid synthesis and detoxification).

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Golgi Complex

A series of membranous sacs that process, sort, package, and deliver proteins to various parts of the cell.

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Mitochondria

The energy-generating organelles with a smooth outer membrane and inner membrane folded into cristae, containing a matrix.

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Lysosomes

Membrane-enclosed spheres formed from the Golgi complex containing digestive enzymes to break down molecules.

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Centrosome

A dense area near the nucleus containing centrioles, involved in the movement of chromosomes during cell division.

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Sodium-Potassium Pump

A carrier protein that moves sodium out and potassium into cells, using ATP.

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Endocytosis

Process of taking substances into the cell via vesicles formed by the plasma membrane.

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Pinocytosis

A type of endocytosis known as 'cell drinking,' taking in liquids.

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Phagocytosis

A type of endocytosis known as 'cell eating,' engulfing large particles or pathogens.

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Exocytosis

Process of removing substances from the cell by vesicles fusing with the plasma membrane.

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Cytoplasm

The jelly-like substance inside the cell, containing organelles and suspended particles.

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Organelles

Specialized structures within cells that perform distinct functions for growth and maintenance.

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Nucleus

The largest organelle, controlling cell activities and containing genetic material.

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Study Notes

Introduction to Physiology

  • Physiology is the study of nature, introduced by Jean Fernel (1497-1558), with Claude Bernard being considered the father of modern physiology
  • It's the scientific study of functions and mechanisms in living organisms, systems, organs, cells, and biomolecules
  • Physiology is a subdiscipline of biology, encompassing medical, animal, plant, and cell physiology
  • Anatomy is the study of body structures and their relationships
  • Andreaus Vesalius is considered the father of modern anatomy
  • Anatomy and physiology are studied together to understand the human body fully

Homeostasis

  • Homeostasis maintains a stable internal environment despite external changes, and is achieved when structure and function are coordinated
  • The internal environment of a healthy body remains relatively constant within normal limits, regulated by mechanisms from the brain to hormones

Levels of Structural Organization

  • The human body's organization progresses from atoms and molecules to cells, tissues, organs, and organ systems, finally forming the complete organism
  • Biochemical level (atoms, molecules)
  • Cellular level
  • Tissue level
  • Organ level
  • Organ system level
  • Organism level

Cells

  • Cells are the basic units of life with various functions including growth, metabolism, irritability, and reproduction
  • Cells are composed of atoms, molecules, and compounds

Tissues

  • Tissues are groups of similar cells performing specific functions categorized as epithelial, connective, muscular, and nervous tissues

Organs

  • Organs are integrated collections of tissues working together to perform specific functions
  • Examples of organs are the stomach, heart, and lungs

Systems

  • Systems are groups of organs performing major functions, such as the respiratory system.
  • Each system is comprised of organs and tissues working together

Cell Structure and Functions

  • Cells are the basic functional units of the body
  • Cytology studies cells, identifying four parts: plasma membrane, cytoplasm, organelles, and inclusions
  • The plasma membrane's function is to maintain cell integrity, separating the inside from the outside environment
  • The cytoplasm contains organelles that carry out specific functions within the cell
  • Inclusions are secretory products or storage materials found in the cytoplasm

Organelles

  • Organelles are specialized cell structures with specific functions
  • Examples are the nucleus, ribosomes, mitochondria, Golgi apparatus, endoplasmic reticulum, lysosomes, and cytoskeleton
  • The nucleus holds genetic material
  • Ribosomes synthesize proteins
  • Mitochondria generate energy
  • Golgi complexes process, sort, and package cellular products
  • Endoplasmic reticulum is for transport and synthesis
  • Lysosomes perform intracellular digestion
  • Cytoskeleton provides structural support and movement

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