Anatomy & Physiology Study Guide: Foundational Concepts, Cells, Tissues, and Integumentary System

Chapter 1: Introduction to Anatomy & Physiology

Key Terms and Definitions

• Science: The systematic study of the structure and behavior of the physical and natural world through observation and experiment.

• Human Anatomy: The study of the structure of the human body.

• Human Physiology: The study of the functions and mechanisms occurring in the human body.

Characteristics of Living Things

• Organization

• Metabolism

• Responsiveness

• Growth

• Development

• Reproduction

Levels of Organization

• Chemical

• Cellular

• Tissue

• Organ

• Organ System

• Organism

Body Systems and Functions

• There are 11 major body systems (e.g., integumentary, skeletal, muscular, nervous, endocrine, cardiovascular, lymphatic, respiratory, digestive, urinary, reproductive).

• Each system has 2-5 basic functions (e.g., protection, movement, support, transport, regulation).

Types of Anatomy and Physiology

• Systemic Anatomy: Study of body systems.

• Regional Anatomy: Study of specific regions.

• Surface Anatomy: Study of external features.

• Gross Anatomy: Study of structures visible to the naked eye.

• Microscopic Anatomy: Study of structures requiring magnification (e.g., histology, cytology).

• Neurophysiology: Study of nervous system function.

• Cardiovascular Physiology: Study of heart and blood vessels.

Anatomical Position and Terms

• Anatomical Position: Standing upright, facing forward, arms at sides, palms forward.

• Directional Terms: Anterior/ventral, posterior/dorsal, superior/cranial, inferior/caudal, proximal, distal, medial, lateral, superficial, deep, ipsilateral, contralateral.

Body Cavities and Regions

• Major body cavities: cranial, thoracic, abdominal, pelvic.

• Organs located within each cavity (e.g., brain in cranial, heart/lungs in thoracic).

Serous Membranes

• Function: Reduce friction between organs.

• Layers: Parietal (lines cavity), visceral (covers organ).

• Examples: Pericardium (heart), pleura (lungs), peritoneum (abdominal organs).

Medical Imaging

• Techniques: X-ray, CT, MRI, ultrasound.

• Purpose: Visualize internal structures for diagnosis.

Homeostasis and Feedback Mechanisms

• Homeostasis: Maintenance of stable internal environment.

• Feedback Mechanisms: Positive (amplifies change) and negative (reduces change).

Chapter 2: Chemistry of Life

Basic Chemistry Concepts

• Chemistry: Study of matter and its interactions.

• Matter: Anything that has mass and occupies space.

• Forms of matter: Solid, liquid, gas.

Atoms and Elements

• Atom: Smallest unit of an element.

• Element: Substance made of one type of atom.

• Six elements make up 95% of living organisms: C, H, O, N, P, S.

• Atomic structure: Protons, neutrons, electrons.

• Atomic number = number of protons.

• Atomic mass = protons + neutrons.

Bonding and Molecules

• Ionic Bonds: Transfer of electrons.

• Covalent Bonds: Sharing of electrons.

• Polar Bonds: Unequal sharing of electrons.

Chemical Reactions

• Reactants: Substances entering a reaction.

• Products: Substances produced.

• Metabolism: All chemical reactions in the body.

• Catabolic: Breakdown reactions.

• Anabolic: Synthesis reactions.

Enzymes and Energy

• Enzyme: Biological catalyst that speeds up reactions.

• Active Site: Region where substrate binds.

• Allosteric Site: Site for regulatory molecules.

• Factors affecting enzyme activity: temperature, pH, concentration.

• Inhibition: Competitive and non-competitive.

Macromolecules

• Carbohydrates: Monosaccharides, disaccharides, polysaccharides.

• Lipids: Saturated, unsaturated, trans fats.

• Proteins: Amino acids, peptide bonds.

• Nucleic Acids: DNA, RNA.

ATP and Energy Transfer

• ATP: Adenosine triphosphate, main energy currency.

• ATP formation: $\text{ADP} + \text{P}_i \rightarrow \text{ATP}$

Chapter 3: The Cell

Cell Structure and Function

• Cell Theory: All living things are made of cells.

• Basic cell parts: plasma membrane, cytoplasm, nucleus.

• Fluid Mosaic Model: Describes membrane structure.

Transport Mechanisms

• Diffusion: Movement from high to low concentration.

• Osmosis: Diffusion of water.

• Facilitated Transport: Uses carrier proteins.

• Active Transport: Requires energy.

• Endocytosis/Exocytosis: Bulk transport into/out of cell.

Cell Cycle and Division

• Phases: Interphase, mitosis, cytokinesis.

• Mitosis: Division of nucleus (prophase, metaphase, anaphase, telophase).

• Meiosis: Division for gamete formation.

DNA and Protein Synthesis

• DNA Replication: Copying DNA before cell division.

• Transcription: DNA to RNA.

• Translation: RNA to protein.

• Enzymes: DNA polymerase, ligase, helicase.

Chapter 4: Tissues

Histology and Tissue Types

• Histology: Study of tissues.

• Four basic tissue types: epithelial, connective, muscle, nervous.

Extracellular Matrix and Ground Substance

• Extracellular Matrix: Non-cellular component providing support.

• Ground Substance: Gel-like material in matrix.

• Protein Fibers: Collagen, elastic, reticular.

Epithelial Tissue

• Characteristics: Cellularity, polarity, attachment, avascularity, regeneration.

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

• Functions: Protection, absorption, secretion.

Glands

• Exocrine: Secrete into ducts.

• Endocrine: Secrete into blood.

• Types: Merocrine, holocrine, apocrine.

Connective Tissue

• Types: Loose (areolar), dense (regular, irregular), adipose, cartilage, bone, blood.

• Cells: Fibroblast, adipocyte, muscle cell.

Cartilage and Bone

• Cartilage types: Hyaline, fibrocartilage, elastic.

• Bone: Osteocytes, matrix, function in support and protection.

Muscle Tissue

• Types: Skeletal (voluntary), cardiac (involuntary), smooth (involuntary).

• Functions: Movement, posture, heat production.

Nervous Tissue

• Neurons: Conduct impulses.

• Glial cells: Support neurons.

Chapter 5: Integumentary System

Skin Structure and Function

• Dermatology: Study of skin.

• Layers: Epidermis (stratum basale, spinosum, granulosum, lucidum, corneum), dermis, hypodermis.

• Functions: Protection, temperature regulation, sensation, vitamin D synthesis.

Cells of the Epidermis

• Keratinocytes: Produce keratin.

• Dendritic (Langerhans) cells: Immune defense.

• Melanocytes: Produce melanin.

Skin Color and Conditions

• Melanin, carotene, hemoglobin contribute to skin color.

• Conditions: Erythema (redness), pallor (paleness), cyanosis (bluish).

Hair and Nails

• Hair: Protection, sensation, temperature regulation.

• Nails: Protect digits, aid in grasping.

Glands

• Types: Eccrine (sweat), apocrine (scent), sebaceous (oil).

Burns and Skin Cancer

• Burns: 1st, 2nd, 3rd degree (depth and severity).

• Skin cancer types: Basal cell carcinoma, squamous cell carcinoma, malignant melanoma.

• ABCDE rule for melanoma: Asymmetry, Border, Color, Diameter, Evolving.

Wound Healing and Regeneration

• Stages: Inflammation, proliferation, remodeling.

• Fibrosis: Scar tissue formation.

Sample Table: Types of Cartilage

Type	Location	Strength	Flexibility
Hyaline	Joints, nose, trachea	Medium	High
Fibrocartilage	Intervertebral discs, pubic symphysis	High	Low
Elastic	Ear, epiglottis	Low	Very High

Additional info:

• Some content inferred for completeness, such as examples of body systems, types of glands, and wound healing stages.

• Equations and table added for academic context.