Question

muscle tissue

1. the terms and phrases in the key relate to the muscle tissues. for each of the three muscle tissues, select the terms or phrases that characterize it, and write the corresponding letter of each term on the answer line.

key: a. striated
b. branching cells
c. spindle-shaped cells
d. cylindrical cells
e. voluntary
f. involuntary
g. one nucleus
h. many nuclei
i. attached to bones
j. intercalated discs
k. in wall of bladder and stomach
l. forms heart walls

skeletal muscle: _______
cardiac muscle: _______
smooth muscle: _______

Explanation:

Identify skeletal muscle characteristics

Skeletal muscle is characterized by:

• Striated appearance (a)
• Cylindrical cells (d)
• Voluntary control (e)
• Many nuclei per cell (h)
• Attached to bones (i)

Identify cardiac muscle characteristics

Cardiac muscle is characterized by:

• Striated appearance (a)
• Branching cells (b)
• Involuntary control (f)
• One nucleus per cell (g)
• Intercalated discs (j)
• Forms heart walls (l)

Identify smooth muscle characteristics

Smooth muscle is characterized by:

• Spindle-shaped cells (c)
• Involuntary control (f)
• One nucleus per cell (g)
• Located in walls of bladder and stomach (k)

Answer:

1. The terms and phrases in the key relate to the muscle tissues. For each of the three muscle tissues, select the terms or phrases that characterize it, and write the corresponding letter of each term on the answer line.

Key:
a. striated
b. branching cells
c. spindle-shaped cells
d. cylindrical cells
e. voluntary
f. involuntary
g. one nucleus
h. many nuclei
i. attached to bones
j. intercalated discs
k. in wall of bladder and stomach
l. forms heart walls

Skeletal muscle: <blank>a, d, e, h, i</blank>
Cardiac muscle: <blank>a, b, f, g, j, l</blank>
Smooth muscle: <blank>c, f, g, k</blank>