Answer the following statements true (T) or false (F)
1. Although there are no sarcomeres, smooth muscle still possesses thick and thin filaments.
2. Muscle tone is the small amount of tautness or tension in the muscle due to weak, involuntary contractions of its motor units.
3. Single-unit smooth muscle is found in the intestines.
4. A resting potential is caused by a difference in the concentration of certain ions inside and outside the cell.
5. The effect of a neurotransmitter on the muscle cell membrane is to modify its ion permeability properties temporarily.
1. TRUE
2. TRUE
3. TRUE
4. TRUE
5. TRUE
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Fill in the blank(s) with the appropriate word(s).
Which type of muscle lines the blood vessels and airways of the body?
A. Rough B. Glia C. Smooth D. Striated
In response to action potentials arriving along the transverse tubules, the sarcoplasmic reticulum releases
What will be an ideal response?
The supine position ________
A) Is also called the anatomical position B) Describes the body lying face upward C) Describes the body lying face downward D) Both A and B