Heart rate is increased by the release of epinephrine by the adrenal medulla into the bloodstream. This is an example of
A. positive feedback.
B. paracrine control.
C. exocrine control.
D. direct neural control.
E. endocrine control.
Answer: E
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The inferior aspect of the epiglottis attaches to the
A. thyroid cartilage. B. cricoid cartilage. C. hyoid bone. D. thyroid gland.
Answer the following statements true (T) or false (F)
1. Two neuron reflexes contain an interneuron and a motor neuron. 2. A ganglion is a group of nerve cell bodies located in the peripheral nervous system. 3. The difference between a two- and three-neuron reflex is the presence of an interneuron. 4. All interneurons are found in the central nervous system. 5. Multiple sclerosis is a disorder caused by injury or death to the oligodendrocytes.
Which immunoglobin triggers an allergic reaction
A) IgG B) IgA C) IgM D) IgE E) IgD
What feature do platelets possess?
A) the ability to reproduce by mitosis B) plasma membrane C) protein-synthesizing organelles D) nucleus