What is occurring when a muscle experiences an involuntary quick movement?
a. Twitch contraction.
b. Tetanic contraction.
c. Isotonic contraction.
d. Isometric contraction.
Answer: a. Twitch contraction.
You might also like to view...
The limbic system
A. has recently evolved. B. is associated with basic survival instincts of nutrition, memory, and reproduction. C. controls voluntary movements of the arms and legs. D. is a memory area in the midbrain. E. includes the brainstem.
The cardiac plexus and cardiac nerves dominate the innervation of the heart and contains both parasympathetic and sympathetic fibers.
Answer the following statement true (T) or false (F)
A pollex has ______ phalanges
A. 2 B. 3 C. 14 D. 10 E. 7
A drug that functions as an agonist
A) activates a receptor, helping a neurotransmitter bind or triggering an action potential in some other way. B) causes great pain if taken in too high a dose. C) relieves pain. D) blocks a receptor so that the neurotransmitter cannot bind.