Chapter 14 - Autonomic Nervous System

Chapter 14 - Autonomic Nervous System

• Two main divisions of the ANS: sympathetic and parasympathetic
• Sympathetic division (fight or flight): originates in the CNS, preganglionic neurons are short, postganglionic are long release acetylcholine at preganglionic and norepinephrine/epinephrine at postganglionic.
• Parasympathetic division (rest and digest): originates in the CNS, preganglionic neurons are long, postganglionic are short, release acetylcholine at both pre and postganglionic.
• Neurotransmitters for each division differ
• Anatomical pathways for sympathetic and parasympathetic neurons to reach target effectors involve preganglionic and postganglionic neurons.
• Sympathetic division increases heart rate and relaxes bowels while parasympathetic decreases heart rate and relaxes bowels.
• Adrenal medulla is part of sympathetic division; releases epinephrine and norepinephrine into the blood when stimulated.
• Cholinergic receptors bind to acetylcholine; subtypes are muscarinic and nicotinic.
• Adrenergic receptors bind to epinephrine and norepinephrine; subtypes are alpha1, alpha2, beta1, beta2, and beta3.
• Dual innervation: both sympathetic and parasympathetic divisions control many organs.

Chapter 16 - Endocrine System

• Endocrine system secretes hormones into the bloodstream to regulate body functions.
• Hormones are regulatory substances made of amino acids, peptides, or lipids; these are produced, stored, and transported differently depending on chemical type.
• Endocrine organs include pancreas, anterior pituitary gland, testes, ovaries, thyroid, parathyroid, adrenal glands, and thymus. Hypothalamus and posterior pituitary are classified as secondary.
• Nervous and endocrine systems control body functions through distinct but often interwoven mechanisms
• Hypersecretion leads to excess hormone activity and hyposecretion to diminished hormone activity.
• Major chemical classes of hormones are amino acid-based hormones and steroid hormones.
• Target cell receptors for steroid and peptide hormones differ in location (embedded in the cell membrane, cytosol, nucleus)
• Hormone receptors and mechanisms have differing effects on cells (hydrophobic versus hydrophilic hormones)
• Hormone production and secretion are regulated through negative feedback loops.
• Hypothalamus plays a crucial role in anterior and posterior pituitary hormone regulation.

Chapters 17 & 18 - Cardiovascular System

• Heart is located in the thoracic cavity, divided into right and left sides.
• Heart secretes atrial natriuretic peptide.
• Detailed description of cardiac cycle, including heart chambers, valves, internal structures, and blood flow.
• The major blood vessels responsible for delivering oxygenated and deoxygenated blood to and from the heart wall are described.
• Microscopic anatomy of myocardium, including intercalated discs.
• Detailed description of cardiac muscle action potentials, including phases.
• Control of heart rate by autonomic innervation (sympathetic and parasympathetic).
• Cardiac conduction system.
• Electrocardiogram (ECG) components and their relation to electrical events.

Chapter 19 - Blood

• Blood composition: 55% plasma and 45%formed elements (red blood cells, white blood cells, and platelets).
• Morphological features and functions of formed elements (red blood cells, white blood cells, and platelets) are discussed.
• Blood types are distinguished.
• Hematopiesis descriptions, significance, and locations.
• Hemoglobin and its breakdown products are described
• Various types of anemia.
• Platelet formation and hemostasis.

Chapter 20 - Lymphatic System & Immunity

• Lymphatic system consists of lymph, lymphatic vessels and associated lymphatic organs (thymus, bone marrow, lymph nodes, spleen, and tonsils).
• Lymph is collected, purified, filtered, and return to the circulatory system. • Lymphoid organs produce and maintain lymphocytes, which are crucial to the immune response.
• Innate versus adaptive immunity.
• Structure and function of surface barriers (skin and mucous membranes) are described, along with their role in immunity.
• Types of leukocytes (white blood cells) are described (neutrophils, lymphocyte, monocyte, eosinophils, basophils) including their functions in immune responses.
• B cell and T cell activation, antibody production and other roles in immunity.

Chapter 21 - Respiratory System

• Airway structure from nares to alveoli, including functions of each part.
• Respiratory membrane structure and roles in gas exchange.
• Mechanics of pulmonary ventilation, including changes in pressure and volume.
• Lung volumes and capacities
• Physiological significance of surfactant
• How oxygen reaches the tissue cells
• How carbon dioxide is transported in the blood
• Role of breathing control centers in the brainstem, including the roles of central and peripheral chemoreceptors.
• Restrictive and obstructive lung disorders.

Chapter 22 & 23 - Digestive System & Metabolism

• Digestive tract organs and accessory digestive organs in order from mouth to anus.
• Digestive tract layers (mucosa, submucosa, muscularis externa, and serosa)
• Digestive processes: ingestion, secretion, propulsion, digestion, absorption, and defecation.
• Processes of chewing, swallowing, and peristalsis.
• Roles of digestive secretions and hormones in controlling digestion and absorption.
• Processes of nutrient digestion and absorption of carbohydrates, proteins, and lipids.
• Role of bacteria in large intestine.
• Defecation reflex.

Chapter 24 - Urinary System

• Kidney structure (cortex, medulla, pelvis), and nephron structure descriptions.
• Processes of urine production and function.
• Renal tubular reabsorption and secretion processes.
• Forces that make up NFP and how they relate to GFR.
• Regulation of GFR by myogenic mechanism and tubuloglomerular feedback.
• Role of hormones in regulating GFR (RAAS).
• Kidney function description regarding the regulation of blood pressure, blood pH, and excretion of metabolic wastes.
• Volume and osmolarity regulation of urine.

Chapter 25 - Fluid Electrolyte and Acid-Base Homeostasis

• Distribution of water within the body (ICF, ECF) and comparison of intracellular and extracellular solute concentrations
• Balancing water intake and output
• Regulation of blood pressure.
• The micturition reflex.
• Acid-base homeostasis
• Regulation of body temperature
• Regulation of sodium and potassium levels
• Acid-base balance and disorders, including acidosis and alkalosis.
• Importance of electrolytes in maintaining homeostasis

Chapter 26 - Reproductive System

• Structures and functions of the male and female reproductive tracts.
• Positions of reproductive organs in the pelvis.
• Spermatogenesis and oogenesis.
• Reproductive hormones and regulation of the HPG axis.
• Ovarian and uterine cycles
• Phases of puberty and hormonal regulation.
• Production of semen.
• Types of contraceptives.

Chapter 27 - Development

• Period of intrauterine development, from pre-embryonic to fetal stages.
• Processes during development, including fertilization, implantation, and formation of the embryo and fetus.
• Extraembryonic membranes and their roles
• Development of cardiovascular changes at birth.
• Labor stages and physiological changes in the mother during pregnancy.
• Lactation and its hormonal regulation.
• Types of inheritance (autosomal, X-linked, and incomplete dominance).

This quiz covers the key concepts of Chapter 14 focusing on the Autonomic Nervous System (ANS). It explores the two main divisions, sympathetic and parasympathetic, their functions, neurotransmitters, and anatomical pathways. Test your knowledge on how these divisions affect the body's responses.