Basics
These two systems make oxygen available to blood and body cells.
The respiratory and cardiovascular systems
These hair-like structures propel substances across a cell’s surface.
cilia
This tissue type lines body surfaces and cavities.
epithelial tissue
This is the most superficial layer of the epidermis.
stratum corneum
This type of bond involves sharing of electrons.
covalent bond
This term refers to the study of body function.
physiology
This organelle produces ATP for the cell.
mitochondrion
This type of connective tissue stores fat.
adipose tissue
These glands produce sweat and help with thermoregulation.
eccrine glands
The most important metabolic fuel in the body.
glucose
The body’s thermostat is located in this brain region.
hypothalamus
This type of membrane protein allows water and solutes to pass through the membrane.
channel protein
These junctions prevent leakage between epithelial cells.
tight junctions
This muscle causes hair to stand up and produces goosebumps.
arrector pili muscle
This reaction type breaks molecules apart and releases energy.
Decomposition (or catabolic) reaction
This level of organization includes atoms and molecules.
Chemical level
These organelles are responsible for protein synthesis
Ribosomes
This cartilage type is found in intervertebral discs.
fibrocartilage
This pigment provides skin its color and UV protection.
melanin
This lipid is known as animal starch and stores glucose.
glycogen
This plane divides the body into anterior and posterior sections.
frontal (or coronal) plane
The control center of the cell.
Nucleus
This connective tissue fiber can stretch and return to its original length.
elastic fiber
This layer of skin contains blood vessels and sensory receptors.
dermis
These macromolecules are made of amino acids.
proteins