BIOL 2457 Final Exam Study Guide 2026

BIOL 2457 Final Exam Study Guide 2026
Chapter 1 - Introduction to Human Anatomy and Physiology

Anatomy vs. Physiology

 Anatomy focuses on the structure of body parts and their relationships to one another,
while physiology deals with the functions of body parts.

Characteristics of Living Things

 Living things exhibit characteristics such as organization, metabolism, growth, response
to stimuli, and reproduction.

Homeostasis and Organ Systems

 Homeostasis is the body's ability to maintain stable internal conditions despite external
changes.

 Organ systems work together to maintain homeostasis, with each system having specific
functions.

Anatomical Position and Directional Terminology

 Anatomical position is a standard reference position for the body, with the individual
standing upright, facing forward, and arms at the sides.

 Directional terminology describes the location of body parts relative to one another,
such as superior, inferior, anterior, and posterior.

Body Cavities and Feedback Mechanisms

 Body cavities house internal organs and provide protection.

 Feedback mechanisms include negative feedback (reverses a change to maintain
stability) and positive feedback (enhances or amplifies a change).

Chapter 2 - Chemistry of Life

Big Four Elements and Acids/Bases

 The major elements in the human body are nitrogen, carbon, hydrogen, and oxygen
(NCHO).

 Acids release hydrogen ions and have a pH below 7, while bases accept hydrogen ions
and have a pH above 7.

, Molecules of Life X2 X2




 Proteins are polymers made of amino acid monomers and serve various functions, in
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cluding enzymatic activity. X2 X2




Chapter 3 - Cell Structure and Function
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Cell Components and Plasma Membrane
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 Cells consist of three main parts: the plasma membrane, cytoplasm, and nucleus.
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 The plasma membrane allows small, nonpolar molecules to diffuse directly through.
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Cell Transport and Organelles
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 Passive transport includes diffusion and osmosis, while active transport requires energy to
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move molecules against their concentration gradient.
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 Organelles like ribosomes, lysosomes, and mitochondria have specific functions in the c
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ell.

Chapter 4 - X2 X2




Tissues and Membranes Tissue Types
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and Functions
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 Tissues are groups of cells with similar structure and function.
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 Muscle tissue contracts to produce movement, epithelial tissue covers body surfaces, a
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nd connective tissue supports and binds other tissues.
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Epithelial and Connective Tissue
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 Epithelial tissue in the alveoli aids in gas exchange, while skin epidermis contains a sp
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ecific type of epithelial tissue. X2 X2 X2 X2




 Connective tissue in ligaments/tendons provides strength and serves as a template for b X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2 X2




one formation. X2




Chapter 5 - X2 X2




Integumentary System Skin Functions
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X2 and Glands
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 The skin serves as a protective barrier, regulates body temperature, and houses sensory re
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ceptors.

 Epidermis contains keratinocytes and melanocytes, with sweat and sebaceous glands pl
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aying roles in thermoregulation and lubrication.
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