integumentary system
name the layers of the skin from superficial to deep
corneum, lucidum, granulosum, spinosum, basal
what is the term for one layer of cells
simple
what are the 4 types of macromolecules?
carbohydrates, lipids, proteins, nucleic acids
what is a group of muscle cells called?
fascicle
what type of ATP-making pathway doesn't use oxygen?
anarobic
what layer is completely dead cells?
corneum
which epithelial cell has a flat shape
squamous
what is a monomer of DNA?
nucleic acid
describe the different types of muscle and their differences
skeletal, smooth, cardiac
striations
voluntary/involuntary
what are the two parts of anaerobic respiration?
glycolysis and lactic acid fermentation
where is thick skin found
palms and soles
which connective tissue is found in tendons
dense regular
where can a hydrophobic molecule be found?
plasma membrane
what are myofilaments? give an example
actin and myosin
describe type 2 muscle fibers
more myofibrils, fatigue faster, weight lifting
what cell junctions are present in the spinosum
desmosomes
where can hyaline cartilage be found?
at the ends of long bones
what types of molecules can cross the plasma membrane
small, hydrophobic
what covers fascicles?
perimysium
what is the optimal position for muscle contraction?
80-120% of resting length
what protein composes the corneum
keratin
draw the connective tissue flowchart
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what is the difference between saturated and unsaturated fatty acids? describe their shape
double bonds
describe muscle contraction
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disuse of muscles could cause them to ...
atrophy