Module 1: Basic tissue types: Muscle

Question 1

skeletal muscle

Answer 1

voluntary
striated

Appearance: Elongated, unbranched, flattened nuclei, regular cross-striations, arranged in bundles
Location: All voluntary muscle
Function: Responsible for movement of skeletons and organs

Question 2

visceral muscle

Answer 2

involuntary
smooth

Appearance: elongated, spindle-shape with pointed ends, centrally located nucleus, no striations,
Location: Gastrointestinal tract, uterus, urinary bladder, blood vessels
Function: continuous, rhythmic contractions, low force contractions, diffuse movement throughout muscle mass

Question 3

cardiac muscle

Answer 3

heart muscle
myocardium

Appearance: one or two elongated and centrally located nuclei, longs fibers, branching cytoplasm, intercalated discs, cross striations
Location: Heart
Function: Contraction of the atria and ventricles of the heart

Question 4

Contractile cells

Answer 4

myoepithelial: found in some secretory glands
pericytes: smooth muscle cells surrounding blood vessels
myofibroblasts: found during scar formation, also secrete collagen