Overview

This study guide summarizes the key learning outcomes for the final exam in a college-level Anatomy & Physiology (ANP) course, covering Chapters 1–15. Each topic is organized by chapter and includes definitions, explanations, examples, and relevant academic context to facilitate exam preparation.

Ch. 1 The Human Body: An Orientation

Organ Systems of the Body

The human body consists of 11 organ systems, each with distinct components and functions:

• Integumentary System: Skin, hair, nails; protects body, regulates temperature.

• Skeletal System: Bones, joints; supports body, protects organs, stores minerals.

• Muscular System: Muscles; movement, posture, heat production.

• Nervous System: Brain, spinal cord, nerves; fast control, communication, response to stimuli.

• Endocrine System: Glands (e.g., thyroid, adrenal); hormone production, slow regulation.

• Cardiovascular System: Heart, blood vessels; transport of nutrients, gases, wastes.

• Lymphatic System: Lymph nodes, vessels; immune defense, fluid balance.

• Respiratory System: Lungs, airways; gas exchange (O2, CO2).

• Digestive System: Stomach, intestines; breakdown and absorption of food.

• Urinary System: Kidneys, bladder; waste removal, water/electrolyte balance.

• Reproductive System: Ovaries/testes; production of gametes, offspring.

Homeostasis: Negative and Positive Feedback

• Negative Feedback: Maintains stability by reversing deviations (e.g., temperature regulation).

• Positive Feedback: Amplifies changes (e.g., blood clotting, childbirth).

Example: Thermoregulation via negative feedback: If body temperature rises, mechanisms (sweating, vasodilation) lower it.

Anatomical Terms

• Directions: Superior/inferior, anterior/posterior, medial/lateral, proximal/distal.

• Regions: Axial (head, neck, trunk), appendicular (limbs).

• Planes: Sagittal, frontal (coronal), transverse.

Ch. 2 Chemistry Comes Alive

Polar vs. Nonpolar Compounds

• Polar: Unequal electron sharing, partial charges (e.g., water).

• Nonpolar: Equal electron sharing, no charge separation (e.g., O2, lipids).

Lipids: Structure and Function

• Building Blocks: Fatty acids, glycerol.

• Structure: Triglycerides, phospholipids, steroids.

• Functions: Energy storage, membrane structure, hormones.

ATP in Cell Metabolism

• ATP (Adenosine Triphosphate): Main energy currency.

• Role: Transfers energy for cellular processes.

Equation:

Ch. 3 Cells: The Living Units

Selective Permeability of Plasma Membrane

• Definition: Allows certain substances to cross while restricting others.

• Mechanism: Lipid bilayer, protein channels.

Transport Mechanisms

• Simple Diffusion: Passive, small nonpolar molecules.

• Facilitated Diffusion: Passive, uses protein channels for larger/polar molecules.

• Osmosis: Diffusion of water across membrane.

Cell Organelles

• Mitochondria: ATP production.

• Ribosomes: Protein synthesis.

• Endoplasmic Reticulum (ER): Rough (protein synthesis), Smooth (lipid synthesis).

• Golgi Apparatus: Modifies, sorts, packages proteins.

Protein Synthesis

• Phases: Transcription (DNA to mRNA), Translation (mRNA to protein).

• Roles: DNA (template), mRNA (messenger), tRNA (transfer), rRNA (ribosomal).

Ch. 4 Tissue: The Living Fabric

Epithelial Tissue

• Types: Simple, stratified, squamous, cuboidal, columnar.

• Functions: Protection, absorption, secretion.

• Locations: Skin, lining of organs.

Glands

• Exocrine: Secrete via ducts (e.g., sweat glands).

• Endocrine: Secrete hormones into blood.

• Multicellular vs. Unicellular: Goblet cells (unicellular), salivary glands (multicellular).

Connective Tissue

• Types: Loose, dense, cartilage, bone, blood.

• Functions: Support, protection, transport.

Ch. 5 The Integumentary System

Skin Layers

• Epidermis: Outer layer, protection.

• Dermis: Inner layer, strength, flexibility.

• Subcutaneous Tissue: Fat storage, insulation.

Glands

• Sweat (Sudoriferous) Glands: Eccrine (all over), apocrine (armpits, groin); secrete watery sweat for cooling.

• Oil (Sebaceous) Glands: Associated with hair follicles; secrete sebum for lubrication.

Functions of Skin

• Protection

• Temperature regulation

• Sensation

• Vitamin D synthesis

• Excretion

Ch. 6 Bones and Skeletal Tissues

Bone Anatomy

• Flat Bone: Thin, e.g., skull.

• Long Bone: Shaft (diaphysis), ends (epiphysis), e.g., femur.

• Red Marrow: Blood cell production.

• Yellow Marrow: Fat storage.

• Articular Cartilage: Joint surface cushioning.

• Periosteum: Outer covering.

• Endosteum: Inner lining.

Bone Formation

• Intramembranous Ossification: Forms flat bones.

• Endochondral Ossification: Forms long bones from cartilage.

Bone Cells

• Osteoblasts: Build bone.

• Osteocytes: Maintain bone.

• Osteoclasts: Break down bone.

Ch. 8 Joints

Body Movements

• Flexion, extension, abduction, adduction, rotation, circumduction.

Synovial Joints

• Plane, hinge, pivot, condyloid, saddle, ball-and-socket.

• Examples: Knee (hinge), shoulder (ball-and-socket).

Major Joints

• Jaw: Temporomandibular joint.

• Shoulder: Glenohumeral joint.

• Elbow: Humeroulnar joint.

• Hip: Acetabulofemoral joint.

• Knee: Tibiofemoral joint.

• Ankle: Talocrural joint.

Each joint has specific articulating bones, anatomical features, allowed movements, and stability factors.

Ch. 9 Muscles and Muscle Tissue

Microscopic Structure of Skeletal Muscle

• Myofibrils: Contractile units.

• Sarcomeres: Functional contractile segments.

• Sarcoplasmic Reticulum: Stores Ca2+.

• Sarcoplasm: Cytoplasm of muscle cell.

• Sarcolemma: Cell membrane.

• T Tubules: Conduct action potentials.

Muscle Contraction

• Neuromuscular Junction: Site where motor neuron stimulates muscle fiber.

• Cross-Bridge Cycle: Attachment, power stroke, detachment, re-cocking of myosin heads.

• Relaxation: Ca2+ returns to sarcoplasmic reticulum.

Ch. 11 Fundamentals of the Nervous System and Nervous Tissue

Membrane Ion Channels

• Leak, ligand-gated, voltage-gated, mechanically-gated channels.

Graded vs. Action Potentials

• Graded: Local, variable strength, decremental.

• Action: All-or-none, propagated, constant strength.

Generation and Propagation of Action Potentials

• Depolarization, repolarization, hyperpolarization.

• Propagation via voltage-gated Na+ and K+ channels.

Equation:

Ch. 12 The Central Nervous System

Cerebral Cortex

• Lobes: Frontal, parietal, temporal, occipital.

• Fissures: Longitudinal, lateral, central sulcus.

• Functional Areas: Motor cortex (precentral gyrus), sensory cortex (postcentral gyrus).

Cerebellum

• Coordinates movement, balance.

Protection of CNS

• Meninges: Dura, arachnoid, pia mater.

• Cerebrospinal Fluid: Cushions, nourishes.

• Blood Brain Barrier: Restricts passage of substances.

Spinal Cord Structure

• Gray matter (cell bodies), white matter (axons).

• Central canal, dorsal/ventral horns.

Ch. 13 The Peripheral Nervous System and Reflex Activity

Cranial Nerves

• 12 pairs, each with specific functions and innervation regions.

Spinal Nerves

• Structure: Roots, rami.

• Distribution: Dorsal (sensory), ventral (motor).

Reflex Arcs

• Components: Receptor, sensory neuron, integration center, motor neuron, effector.

• Autonomic: Involuntary (e.g., heart rate).

• Somatic: Voluntary (e.g., knee jerk).

Ch. 14 The Autonomic Nervous System

Parasympathetic vs. Sympathetic Divisions

• Parasympathetic: Rest and digest.

• Sympathetic: Fight or flight.

Cholinergic and Adrenergic Fibers

• Cholinergic: Release acetylcholine; receptors: nicotinic, muscarinic.

• Adrenergic: Release norepinephrine; receptors: alpha, beta.

Effects on Organs

Autonomic Controls

• Regulated by hypothalamus, brainstem, spinal cord.

Ch. 15 The Special Senses

Sensation and Perception

• Stimulus detection, signal transduction, CNS processing.

Sensory Receptors

• Mechanoreceptors, thermoreceptors, photoreceptors, chemoreceptors.

• Examples: Touch (mechanoreceptors), taste (chemoreceptors).

Gustation (Taste)

• Transduction: Different tastes (sweet, salty, sour, bitter, umami) via specific receptors.

• Pathway: Taste buds → cranial nerves → medulla → thalamus → gustatory cortex.

Olfaction (Smell)

• Transduction: Odorants bind to olfactory receptors.

• Pathway: Olfactory epithelium → olfactory bulb → olfactory cortex.

Eye Anatomy and Function

• Accessory structures: Eyelids, lacrimal glands.

• Layers: Sclera, choroid, retina.

• Lens: Focuses light.

• Humors: Aqueous and vitreous.

Eye Disorders

• Cataracts: Clouding of lens.

• Glaucoma: Increased intraocular pressure.

• Astigmatism: Irregular curvature.

• Myopia: Nearsightedness.

• Hyperopia: Farsightedness.

• Presbyopia: Age-related loss of accommodation.

Phototransduction

• Rods: Low light, scotopic vision.

• Cones: Color, photopic vision.

• Light → retinal change → neural signal.

Visual Pathway

• Retina → optic nerve → optic chiasm → thalamus → visual cortex.

Hearing and Equilibrium

• Sound conduction: External ear → middle ear → inner ear fluids.

• Transduction: Cochlea hair cells convert sound to neural signal.

• Auditory pathway: Cochlea → auditory nerve → brainstem → auditory cortex.

• Hearing loss: Conductive, sensorineural, central.

• Balance: Semicircular canals (rotation), vestibule (linear acceleration).

Additional info: This guide expands brief learning outcomes into structured, academic explanations suitable for exam review. For each topic, definitions, examples, and context are provided to ensure completeness and clarity.