If the heart receives more sympathetic stimulation than parasympathetic stimulation, the heart will
A. increase its rate and force of contraction.
B. contract with greater force but at a slower rate.
C. decrease both its rate and force of contraction.
D. contract with less force but at a faster rate.
E. decrease rate, but increase force of contraction.
A
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Growth hormone is secreted by ________ cells in the anterior pituitary.
A. mammotropic B. thyrotropic C. corticotropic D. somatotropic E. gonadotropic
Alpha EEG rhythm is descriptive of or occurs during
A. slow-wave sleep. B. neither slow-wave sleep nor paradoxical sleep. C. paradoxical sleep. D. both slow-wave sleep and paradoxical sleep.
Which is NOT a function performed by activated macrophages?
A. They produce antibodies that bind to specific antigens. B. They secrete cell-killing chemicals. C. They present antigens to T-cells. D. They secrete cytokines involved in inflammation. E. They perform phagocytosis.
Using the figure below, identify the labeled part.
1. Label A: ______________________________
2. Label B: ______________________________
3. Label C: ______________________________
4. Label D: ______________________________
5. Label E: ______________________________