_____________ lack(s) striations and are(is) involuntary.
A)Cardiac muscle
B)Skeletal muscle
C)Smooth muscle
D)Cardiac muscle and skeletal muscle

Question

Quizplus · Accepted Answer

Smooth muscle is the only type of muscle that lacks striations and is involuntary. Cardiac muscle has striations but is involuntary, while skeletal muscle has striations but is voluntary. Therefore, the correct answer is C) Smooth muscle.

_____________ Lack(s) Striations and Are(is) Involuntary