Anatomy and Physiology I: Course Competencies and Study Guide

Study Guide - Smart Notes

Tailored notes based on your materials, expanded with key definitions, examples, and context.

I. Introduction to Anatomy and Physiology

Anatomy and Physiology I introduces students to the structure and function of the human body, focusing on foundational concepts, terminology, and the organization of body systems.

Anatomy: The study of the structure of body parts and their relationships to one another.
Physiology: The study of the function of the body’s structural machinery.
Subdivisions of Anatomy: Includes gross (macroscopic), microscopic (cytology and histology), and developmental anatomy.
Levels of Organization: Chemical, cellular, tissue, organ, organ system, and organismal levels.
Homeostasis: The maintenance of a stable internal environment.
Directional Terms: Used to describe the locations of structures (e.g., superior, inferior, anterior, posterior).
Body Planes and Sections: Sagittal, frontal (coronal), and transverse planes.
Body Cavities: Dorsal (cranial and vertebral) and ventral (thoracic and abdominopelvic) cavities.

II. Basic Chemistry and Biochemistry

Understanding the chemical basis of life is essential for studying anatomy and physiology. This includes the study of matter, energy, and the chemical composition of the body.

Atoms and Elements: Atoms are the smallest units of matter; elements are pure substances made of one type of atom.
Atomic Structure: Protons, neutrons, and electrons; atomic number and mass number.
Compounds and Molecules: Molecules are two or more atoms bonded together; compounds are molecules with different elements.
Chemical Bonds: Ionic, covalent, and hydrogen bonds.
Water: Universal solvent, high heat capacity, and important for chemical reactions.
pH and Buffers: pH measures hydrogen ion concentration; buffers maintain pH balance.
Organic Molecules: Carbohydrates, lipids, proteins, and nucleic acids.
ATP: Adenosine triphosphate, the main energy currency of the cell.

Example: The formula for water is ; the formula for glucose is .

III. The Cell

The cell is the basic structural and functional unit of life. Understanding cell structure and function is fundamental to all of biology.

Plasma Membrane: Phospholipid bilayer with embedded proteins; regulates entry and exit of substances.
Membrane Transport: Includes passive (diffusion, osmosis, facilitated diffusion) and active (pumps, endocytosis, exocytosis) processes.
Organelles: Nucleus (contains DNA), mitochondria (energy production), endoplasmic reticulum (protein/lipid synthesis), Golgi apparatus (modification and packaging), lysosomes (digestion), cytoskeleton (structure and movement).
Cell Cycle: Interphase (G1, S, G2 phases) and mitosis (prophase, metaphase, anaphase, telophase), followed by cytokinesis.

IV. Tissues

Tissues are groups of similar cells that perform a common function. There are four basic tissue types in the human body.

Epithelial Tissue: Covers surfaces, lines cavities, forms glands.
Connective Tissue: Supports, protects, binds other tissues (includes bone, blood, cartilage, adipose).
Muscle Tissue: Responsible for movement (skeletal, cardiac, smooth muscle).
Nervous Tissue: Initiates and transmits electrical impulses.

Example: The skin’s outer layer is composed of stratified squamous epithelial tissue.

V. The Integumentary System

The integumentary system includes the skin and its derivatives (hair, nails, glands). It serves as a protective barrier and has multiple functions.

Layers of the Skin: Epidermis (outer), dermis (middle), hypodermis (subcutaneous layer).
Functions: Protection, temperature regulation, sensation, vitamin D synthesis, excretion.
Skin Repair: Involves inflammation, proliferation, and remodeling phases.
Clinical Application: The ABCD rule for recognizing melanoma (Asymmetry, Border, Color, Diameter).

VI. The Skeletal System

The skeletal system provides support, protection, and movement, and is involved in blood cell production and mineral storage.

Bone Structure: Compact and spongy bone, diaphysis, epiphysis, periosteum, endosteum.
Bone Cells: Osteoblasts (build bone), osteoclasts (break down bone), osteocytes (maintain bone).
Bone Formation: Intramembranous and endochondral ossification.
Joints: Classified by structure (fibrous, cartilaginous, synovial) and function (immovable, slightly movable, freely movable).
Common Injuries: Fractures, sprains, arthritis.

VII. The Muscular System

The muscular system is responsible for movement, posture, and heat production. It includes skeletal, cardiac, and smooth muscle tissues.

Muscle Types: Skeletal (voluntary), cardiac (involuntary, heart), smooth (involuntary, walls of organs).
Muscle Contraction: Sliding filament theory; actin and myosin interaction.
Neuromuscular Junction: Site where nerve impulses stimulate muscle contraction.
Muscle Metabolism: ATP production via aerobic and anaerobic pathways.

VIII. The Nervous System

The nervous system controls and coordinates body activities by transmitting electrical signals. It is divided into the central and peripheral nervous systems.

Central Nervous System (CNS): Brain and spinal cord.
Peripheral Nervous System (PNS): Cranial and spinal nerves, ganglia, sensory receptors.
Neurons: Basic functional units; transmit electrical impulses.
Neuroglia: Support and protect neurons.
Synapse: Junction between neurons for signal transmission.
Reflex Arc: Pathway for reflex actions.
Autonomic Nervous System: Sympathetic (fight or flight) and parasympathetic (rest and digest) divisions.

IX. The Special Senses

The special senses include vision, hearing, equilibrium, taste, and smell. Each sense has specialized organs and receptors.

Vision: Eye structure (cornea, lens, retina), photoreceptors (rods and cones).
Hearing and Equilibrium: Ear structure (external, middle, inner ear), cochlea, vestibular apparatus.
Taste: Taste buds on the tongue; five basic tastes.
Smell: Olfactory receptors in the nasal cavity.

Table: Major Body Systems and Their Functions

System	Main Organs	Primary Functions
Integumentary	Skin, hair, nails	Protection, temperature regulation, sensation
Skeletal	Bones, joints	Support, movement, protection, blood cell production
Muscular	Muscles	Movement, posture, heat production
Nervous	Brain, spinal cord, nerves	Control, coordination, response to stimuli
Special Senses	Eyes, ears, tongue, nose	Vision, hearing, taste, smell, equilibrium

Additional info:

Course content is organized by weekly topics, covering the above systems in detail.
Assessment includes exams, quizzes, essays, and interactive activities.
Students are expected to understand both the structure and function of each system, as well as clinical applications and common disorders.