Question

name
date
muscle tissues & muscle contraction
fill out the following chart to compare and contrast the 3 types of muscle tissue
muscle type location? striated? cell shape? multinucleated? voluntary?
skeletal
smooth
cardiac
label the following diagram with the appropriate letter from the box below.
a = myofibril
b = sarcolemma
c = thin filament (actin)
d = troponin
e = tropomyosin
f = thick filament (myosin)
g = sarcomere
h = muscle cell (muscle fiber)

Explanation:

Skeletal muscle is attached to bones, striated, has long - cylindrical cells, is multinucleated and voluntary. Smooth muscle is in the walls of hollow organs, non - striated, has spindle - shaped cells, is uninucleated and involuntary. Cardiac muscle is in the heart wall, striated, has branched cells, is uninucleated (usually) and involuntary. For the diagram, identification depends on the specific structures shown in the image, but myofibrils are the contractile elements within muscle cells, sarcolemma is the cell membrane of muscle cells, thin filaments are mainly actin, troponin and tropomyosin are regulatory proteins, thick filaments are myosin, sarcomere is the basic contractile unit, and muscle cell is also called muscle fiber.

Answer:

Muscle type	Location	Striated	Cell shape	Multinucleated	Voluntary
Smooth	Walls of hollow organs (e.g., stomach, intestines, blood vessels)	No	Spindle - shaped	No	No
Cardiac	Heart wall	Yes	Branched	Usually no	No

(Note: Without seeing the specific labeled parts of the diagram, cannot complete the diagram - labeling part. But the table for muscle tissue comparison is filled as above.)