Anatomy and Physiology
Anatomy and Physiology provides a comprehensive study of the human body's structural organization and functional mechanisms across all eleven major organ systems. The course integrates anatomical terminology, tissue-level organization, and physiological processes to build a unified understanding of how the body maintains homeostasis.
Who Should Take This
This course is ideal for students preparing for nursing, allied health, physical therapy, or pre-medical programs and for anyone who completed Biology Fundamentals and wants a deeper focus on the human body. It is particularly valuable for learners who need to understand normal structure and function as a foundation for clinical or healthcare studies.
What's Included in AccelaStudy® AI
Adaptive Knowledge Graph
Practice Questions
Lesson Modules
Console Simulator Labs
Exam Tips & Strategy
13 Activity Formats
Course Outline
1Organization of the Body and Tissue Types 6 topics
Describe the anatomical position and define directional terms including superior, inferior, anterior, posterior, medial, lateral, proximal, distal, superficial, and deep
Identify the three major body planes (sagittal, coronal, transverse) and the body cavities (dorsal, cranial, spinal; ventral, thoracic, abdominopelvic) with their major contents
Identify the four tissue types (epithelial, connective, muscle, nervous) and describe the general structural and functional characteristics that distinguish each
Describe the major subtypes of epithelial tissue including simple versus stratified and squamous, cuboidal, and columnar categories, and explain how each subtype's structure fits its function in lining or glandular roles
Explain the organization levels from cells to tissues to organs to organ systems, and describe how homeostasis requires coordinated communication among multiple organ systems
Describe the connective tissue subtypes including loose and dense connective tissue, cartilage, bone, blood, and adipose tissue, and explain the structural basis of their mechanical and metabolic roles in the body
2Integumentary System 4 topics
Describe the layers of the skin including the epidermis, dermis, and hypodermis, identifying the cell types in each layer and their roles in protection, sensation, and thermoregulation
Identify the accessory structures of the integumentary system including hair follicles, nails, sebaceous glands, and sweat glands, and explain the function of each structure
Explain the five functions of the integumentary system (protection, temperature regulation, sensation, vitamin D synthesis, excretion) and describe how burns are classified by depth and their physiological consequences
Describe the process of wound healing including hemostasis, inflammation, proliferation, and remodeling phases, and explain how age, nutrition, and comorbidities such as diabetes impair normal healing
3Skeletal System 5 topics
Describe the macroscopic and microscopic structure of bone including the periosteum, compact bone (osteon with Haversian canals), spongy bone, and the roles of osteoblasts, osteoclasts, and osteocytes
Identify the major bones of the axial skeleton (skull, vertebral column, thoracic cage) and appendicular skeleton (pectoral girdle, upper limbs, pelvic girdle, lower limbs) using correct anatomical terminology
Explain bone growth and remodeling including endochondral ossification, the epiphyseal plate, and the calcium-regulating roles of parathyroid hormone and calcitonin in maintaining bone homeostasis
Describe synovial joint structure including articular cartilage, the joint capsule, synovial fluid, bursae, and ligaments, and classify joint types (ball-and-socket, hinge, pivot) by movement range
Analyze how osteoporosis results from an imbalance between osteoclast and osteoblast activity, and evaluate risk factors including age, sex, calcium intake, and hormonal status
4Muscular System 6 topics
Describe the three types of muscle tissue (skeletal, cardiac, smooth) and compare their structural features (striated vs. non-striated, voluntary vs. involuntary, number of nuclei) and locations in the body
Explain the sliding filament model of skeletal muscle contraction including the roles of actin, myosin, troponin, tropomyosin, calcium ions, and the power stroke driven by ATP hydrolysis
Describe the neuromuscular junction and the sequence of events from motor neuron action potential through acetylcholine release, receptor binding, muscle fiber depolarization, and initiation of contraction
Identify the major superficial muscles of the human body including the deltoid, pectoralis major, biceps brachii, rectus abdominis, quadriceps, gastrocnemius, and trapezius, and describe the primary action of each
Explain muscle fiber types (slow-twitch Type I, fast-twitch Type IIa and IIb) including differences in fatigue resistance, ATP production method, and adaptations in endurance versus strength athletes
Analyze how disruption of the neuromuscular junction by agents such as botulinum toxin, nerve agents, and myasthenia gravis autoantibodies leads to muscle weakness or paralysis through different mechanisms
5Nervous System 6 topics
Describe the structure of a neuron including the cell body, dendrites, axon, myelin sheath, nodes of Ranvier, and synaptic terminals, and distinguish sensory, motor, and interneurons by function
Explain the generation and propagation of an action potential including resting membrane potential, depolarization, repolarization, hyperpolarization, the all-or-none principle, and saltatory conduction in myelinated axons
Describe synaptic transmission including neurotransmitter release, receptor binding, excitatory and inhibitory postsynaptic potentials, and neurotransmitter inactivation mechanisms
Identify the major divisions of the nervous system (CNS and PNS; somatic and autonomic; sympathetic and parasympathetic) and describe the general function and anatomical organization of each division
Describe the major brain regions including the cerebral cortex lobes, cerebellum, brainstem, limbic system, and hypothalamus, and explain the primary functions and clinical significance of each region
Analyze how strokes, spinal cord injuries, and neurodegenerative diseases disrupt nervous system function, and explain why damage to different regions of the CNS produces specific deficits in motor, sensory, or cognitive function
6Endocrine System 4 topics
Identify the major endocrine glands (hypothalamus, pituitary, thyroid, parathyroid, adrenal, pancreas, gonads, pineal) and describe the primary hormones produced by each and their target effects
Explain the distinction between steroid and peptide hormones including their chemical nature, mechanism of action (intracellular receptors vs. membrane receptors and second messengers), and speed of response
Describe the hypothalamic-pituitary axis and explain how releasing hormones from the hypothalamus regulate anterior pituitary hormone secretion through negative feedback loops
Analyze how diabetes mellitus (Type 1 and Type 2) disrupts blood glucose homeostasis, comparing the roles of insulin and glucagon deficiency or resistance in producing hyperglycemia and its systemic complications
7Cardiovascular System 5 topics
Describe the anatomy of the heart including the four chambers, four valves, the coronary circulation, and the pathway of blood through the pulmonary and systemic circuits
Explain the cardiac conduction system including the SA node, AV node, bundle of His, and Purkinje fibers, and describe how the action potential propagates to produce the coordinated cardiac cycle
Describe the structure and function of arteries, veins, and capillaries including how structural differences relate to their roles in pressure maintenance, nutrient exchange, and blood return to the heart
Explain blood pressure regulation including the roles of cardiac output, peripheral resistance, the baroreceptor reflex, the renin-angiotensin-aldosterone system, and antidiuretic hormone
Analyze how atherosclerosis leads to coronary artery disease and myocardial infarction, describing the sequence from endothelial damage to plaque formation, arterial narrowing, and ischemic tissue death
8Respiratory System 5 topics
Identify the structures of the upper and lower respiratory tracts including the nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles, and alveoli, and describe the function of each
Explain the mechanics of breathing including the roles of the diaphragm and intercostal muscles, Boyle's law relationship between lung volume and pressure, and the distinction between tidal volume, vital capacity, and residual volume
Describe gas exchange at the alveolar-capillary membrane and at tissues, explaining how partial pressure gradients drive the diffusion of oxygen and carbon dioxide across thin membranes
Explain how oxygen and carbon dioxide are transported in the blood including hemoglobin binding curves, the Bohr effect, carbamino compounds, bicarbonate buffering, and the role of carbonic anhydrase
Analyze how obstructive lung diseases (asthma, COPD) and restrictive lung diseases (pulmonary fibrosis) differ in their effects on airflow, lung volumes, and gas exchange efficiency
9Lymphatic and Immune System 5 topics
Describe the components of the lymphatic system including lymph, lymphatic vessels, lymph nodes, thymus, spleen, and tonsils, and explain the roles of this system in fluid balance and immune surveillance
Describe innate immunity including physical barriers, phagocytosis by neutrophils and macrophages, the inflammatory response, fever, and natural killer cells, and explain why innate immunity responds rapidly but nonspecifically
Explain adaptive immunity including the roles of B lymphocytes (antibody production), T helper cells, cytotoxic T cells, antigen presentation via MHC molecules, and the development of immunological memory
Analyze how autoimmune diseases, immunodeficiencies such as HIV/AIDS, and allergic hypersensitivity reactions each represent failures of immune regulation and evaluate the mechanisms underlying each dysfunction
Explain vaccination and herd immunity including how immunological memory from B and T cells prevents reinfection, the difference between active and passive immunity, and how vaccines mimic natural exposure without causing disease
10Digestive System 5 topics
Describe the organs of the alimentary canal from mouth to anus and the accessory organs (salivary glands, liver, gallbladder, pancreas), identifying the primary digestive activities that occur in each region
Explain the mechanical and chemical digestion of carbohydrates, proteins, and lipids including the enzymes involved, the sites of enzyme secretion, and the products of complete digestion
Describe the structure of the small intestine including villi, microvilli, and lacteals, and explain how these adaptations maximize the absorption of nutrients and lipid-soluble versus water-soluble products
Analyze how celiac disease, inflammatory bowel disease, and peptic ulcers impair digestive function at different sites and evaluate the structural or enzymatic defects responsible for each condition
Explain the hormonal regulation of digestion including the roles of gastrin, secretin, and cholecystokinin in stimulating gastric acid secretion, pancreatic enzyme release, and gallbladder contraction in response to food
11Urinary System 5 topics
Identify the organs of the urinary system (kidneys, ureters, urinary bladder, urethra) and describe the gross anatomy of the kidney including the renal cortex, medulla, pyramids, calyces, and pelvis
Describe the structure of the nephron including the glomerulus, Bowman's capsule, proximal convoluted tubule, loop of Henle, distal convoluted tubule, and collecting duct, and explain filtration, reabsorption, and secretion at each segment
Explain how the kidneys regulate blood volume, osmolarity, and pH through the actions of ADH, aldosterone, and the renin-angiotensin-aldosterone system in response to changes in blood pressure and solute concentration
Analyze how chronic kidney disease impairs filtration, leads to accumulation of waste products and fluid, and disrupts electrolyte balance, erythropoietin production, and blood pressure regulation
Describe the concept of glomerular filtration rate (GFR) as the key index of kidney function, explain the autoregulatory mechanisms that maintain relatively constant GFR over a range of arterial blood pressures, and identify creatinine clearance as a clinical proxy
12Reproductive Systems 4 topics
Identify the organs of the male reproductive system (testes, epididymis, vas deferens, seminal vesicles, prostate, urethra, penis) and describe the path of sperm from production to ejaculation
Identify the organs of the female reproductive system (ovaries, fallopian tubes, uterus, cervix, vagina) and describe the ovarian and uterine cycles including the hormonal regulation by FSH, LH, estrogen, and progesterone
Explain spermatogenesis and oogenesis including the stages of meiotic division in each, the hormonal control, and the differences in the timing and number of gametes produced by males versus females
Analyze how hormonal contraceptives, fertility treatments, and conditions such as polycystic ovary syndrome alter the hormonal feedback loops of the hypothalamic-pituitary-gonadal axis
Scope
Included Topics
- Anatomical terminology and body planes, tissue types (epithelial, connective, muscular, nervous), integumentary system, skeletal system and bone physiology, muscular system and muscle contraction, nervous system (CNS and PNS), endocrine system and hormones, cardiovascular system, respiratory system, lymphatic and immune system, digestive system, urinary system, reproductive systems (male and female), homeostatic feedback mechanisms, common pathology touchpoints for each system
Not Covered
- Pharmacology and drug mechanisms beyond conceptual pathology touchpoints
- Advanced histology and electron microscopy detail
- Surgical anatomy and clinical procedural detail
- Molecular immunology and antibody engineering beyond adaptive immunity overview
- Embryology and developmental anatomy beyond foundational overview
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