Acetylcholine's effect on heart muscle cells results from the activation of receptors that _______ channels.
a. open Na+
b. close Na+
c. open K+
d. close K+
Ans: c. open K+
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__________, the first vertebrates able to complete their life cycle on dry land, have water conserving
skin and kidneys, and amniote eggs. Fill in the blank(s) with the appropriate word(s).
There are two main types of adipose tissue. Which one functions in thermogenesis?
What will be an ideal response?
Answer the following statements true (T) or false (F)
1. Phagocytes can only ingest objects that they are able to attach to. 2. The terms “leukemia” and “leukopenia” both refer to an abnormally low number of circulating leukocytes. 3. Ehrlichia spp. are intraleukocytic pathogens. 4. Chemokines are chemotactic agents that are produced by various cells of the human body. 5. Perspiring, swallowing, and urinating are all considered to be part of the first line of defense.
The majority of kidney complications are due to ________
a. gallstones b. diabetes c. constipation d. dehydration e. urinary tract infections