Introduction to Human Anatomy and Physiology

Vocabulary practice flashcards covering fundamental concepts, cellular biology, tissues, organ systems, homeostasis, and anatomical terminology from Chapters 1 through 7.

ATP (Adenosine Triphosphate)

The biological energy molecule produced by living organisms that is necessary to sustain life and perform cellular activities.

Autotrophs

Living organisms, such as plants, that are capable of producing their own energy molecules through processes like photosynthesis.

Heterotrophs

Organisms that cannot produce their own energy molecules and must rely on consuming other organic matter.

Asexual Reproduction

A form of reproduction used by unicellular organisms where a single cell splits into two without requiring sex organs.

Zygote

The single initial cell formed by the combination of a sperm cell and an egg cell, which develops into a multicellular organism.

Cytology

The branch of science focused on the study of cells.

Embryology

The study of early developmental events taking place between the formation of the first cell and roughly twelve weeks (three to four months).

Tissue

A group of similar cells working together to perform a specific common function.

Epithelial Tissue

One of the four primary tissue types that covers structures and surfaces; the skin is its prototype.

Connective Tissue

One of the four primary tissue types that connects structures together and provides structural strength, such as bones.

Muscular Tissue

One of the four primary tissue types specialized for producing internal and external body movements.

Nervous Tissue

One of the four primary tissue types responsible for communication, interaction, environmental awareness, and responsiveness.

Histology

The scientific study of tissues, including their structures and functions.

Organ System

A collection of organs working together toward a common goal or function, such as transport or excretion.

Control Systems

The nervous system and endocrine system, which modulate, influence, and control the activities of other organ systems.

Integumentary System

The organ system consisting of the skin and its accessory structures, including hair and nails.

Taxonomy

The scientific system of classifying and naming living organisms.

Microscopic Anatomy

The study of anatomical structures at the level of cells and tissues requiring magnification.

Gross Anatomy

Also known as macroscopic anatomy; the study of body structures visible to the naked eye.

Community

An ecological level of organization involving two or more different interacting populations.

Ecosystem

An ecological level consisting of interacting biological communities and their non-living physical environment.

Cell Theory

The foundational theory stating that all living things are made of cells, the cell is the basic unit of structure and function, and all cells derive from pre-existing cells.

Homeostasis

The physiological process by which a living organism maintains a stable, constant internal environment within a normal range.

Negative Feedback

The primary homeostatic mechanism (accounting for 95% or more of responses) where the body reverses or changes the direction of a stimulus to restore balance.

Positive Feedback

A homeostatic mechanism where the body responds to a stimulus by amplifying or increasing the stimulus until a specific outcome is achieved.

Oxytocin

A hormone involved in positive feedback that stimulates uterine muscle contractions during childbirth labor.

Prolactin

A hormone involved in positive feedback that stimulates milk production in response to breastfeeding.

Palpation

An examination technique used by anatomists involving touching or manipulating body structures to gather information about texture.

Frontal (Coronal) Section

An imaginary anatomical cut or plane that divides a body structure into anterior (front) and posterior (back) portions.

Transverse (Horizontal) Section

An imaginary anatomical cut or plane that divides a body structure into superior (upper/cephalic) and inferior (lower/caudal) portions.

Sagittal (Median) Section

An imaginary anatomical cut or plane that divides a body structure into medial (axial) and lateral (appendicular) portions.

Regional Anatomy

The precise description of body regions using specific, unique terminology associated with particular organs or areas (e.g., nasal).