The thymus gland is typically ________ in children than adults, and is involved in the maturation of _________.
A. larger; lymphocytes
B. smaller; lymphocytes
C. larger; neurons
D. smaller; neurons
Answer: A
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What is the function of the basal nuclei in normal motor control?
A. They provide a perceptual awareness related to specific sensory inputs from the eyes, nose, and mouth. B. They provide a sense of the cause-and-effect relationships between muscle actions and the consequences of taking these actions before executing them. C. They participate in a looping neuronal circuit through which motor impulses are sent to facilitate or suppress movements. D. They provide a general perceptual awareness associated with somatosensory inputs from the skin, muscles, and joints. E. They form an initial intention to move, such as when you decide to pick up an object.
In skeletal muscles, the combined amounts of creatine phosphate and ATP provide enough energy for the muscle to contract maximally for approximately
a) 15 seconds. b) 15 minutes. c) 1.5 minutes. d) 5 seconds. e) one minute.
Which of the following is an organic compound?
A. Hydrochloric acid (HCl) B. Salt (NaCl) C. Water (H2O) D. Sucrose (C12H22O11) E. None of the choices are correct.
The ________ glands are a source of sex pheromones.
A. eccrine B. ceruminous C. mammary D. apocrine E. sebaceous