and Answers (2026) | Latest Practice Review
with Detailed Explanations | Grade A+
• anatomy -✓✓study of the structure/morphology of the human body and its parts; Greek
for "cutting up"
• physiology -✓✓study of the functions of the human body and its parts; Greek for
"relationship to nature"
• subatomic particles -✓✓protons, neurons, and electrons that make up cells
• atom -✓✓tiny particles that make up chemicals (hydrogen, carbon)
• molecule -✓✓particles consisting of atoms joined together (water, glucose)
• organelle -✓✓functional part of a cell (mitochondrion, lysosome)
• cell -✓✓basic unit of structure and function (muscle, nerve, blood)
• tissue -✓✓layer or mass of cells with specific function (adipose)
• organ -✓✓group of different tissues with a function (heart, kidney, stomach)
• organ system -✓✓group of organs with common function (digestive system)
• organism -✓✓composed of organ systems interacting (human)
• movement -✓✓change in position of body; motion of an internal organ
• responsiveness -✓✓reaction to change inside or outside body
• growth -✓✓increase in body size without change in shape
• reproduction -✓✓production of new organisms and new cells
• respiration -✓✓obtaining oxygen, removing carbon dioxide, and releasing energy from
foods
• digestion -✓✓Breakdown of food substances into simpler forms that can be absorbed
and used
, • absorption -✓✓passage of substances through membranes and into body fluids
• circulation -✓✓movement of substances in body fluids
• assimilation -✓✓changing of absorbed substances into different chemical forms
• excretion -✓✓removal of wastes produced by metabolic reactions
• water -✓✓most abundant substance in the body; environment for metabolic processes;
transports substances; regulates temperature
• food -✓✓provides nutrients; supplies energy; supplies raw materials for building living
tissue
• oxygen (gas) -✓✓one-fifth of air; used to release energy from nutrients
• heat -✓✓form of energy; helps maintain body temperature; controls rate of metabolic
reactions
• pressure -✓✓atmospheric - important for breathing; hydrostatic - keeps blood flowing
• homeostasis -✓✓maintenance of a stable internal environment
• homeostatic mechanism -✓✓self-regulating systems that monitor aspects of the
internal environment and correct them as needed
• matter -✓✓anything that takes up space and has mass; composed of elements; solids,
liquids, and gases
• elements -✓✓simplest form of matter with certain chemical properties
• atoms -✓✓Smallest particles of an element that have properties of that element
• basic unit of matter -✓✓atom
• proton -✓✓carries a single positive charge
• neutron -✓✓carries no electrical charge
• electron -✓✓carries a single negative charge