A motor unit refers to
a. a single motor neuron plus all of the muscle fibers it innervates.
b. a single muscle fiber plus all of the motor neurons that innervate it.
c. all of the motor neurons supplying a single muscle.
d. a pair of antagonistic muscles.
e. a sheet of smooth muscle cells connected by gap junctions.
A
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Which of the following covers the dentin, providing protection and firmly anchoring the periodontal ligament?
A) root B) enamel C) cementum D) gingiva E) blood vessels and nerves
The fertilization of an egg normally occurs in the uterus.
Answer the following statement true (T) or false (F)
An example of a negative feedback loop would be:
a. maintaining proper body temperature b. forming a blood clot c. uterine contractions during childbirth d. both B and C above
Enlargement of the lymph nodes is called?
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