Which two cell types lose the ability to reproduce soon after they are formed?
a. skin cells and heart cells
b. epithelial cells and muscle cells
c. nerve cells and muscle cells
d. kidney cells and pancreatic cells
e. connective cells and nerve cells
c
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For the last few weeks, you have had an odd sensation on your upper thigh. When you touch the naked skin, it feels very strange, like you are touching your skin through layers of cloth. The surrounding area feels normal. Your doctor thinks that this may be related to spinal nerve damage related to a herniated disc. The doctor calls this change in sensation
A) paresthesia. B) anesthesia. C) hypesthesia. D) synesthesia. E) kinesthesia.
Answer the following statements true (T) or false (F)
1. ?-adrenergic receptors are the only receptors found on the heart. 2. Autonomic reflex centers occur in the spinal cord, medulla, and midbrain. 3. Cranial nerves III, VII, and IX supply the entire parasympathetic innervation of the head; however, only the preganglionic fibers lie within these three pairs of cranial nerves. 4. Because parasympathetic fibers never run in spinal nerves, rami communicantes are associated only with the sympathetic division. 5. Rami communicantes are designated white or grey to indicate whether or not the fibers passing through them are myelinated.
Which of the following is true of adaptive immunity?
A. It is present at birth. B. Previous encounters with the foreign substance does not change the response. C. The second response is faster and stronger than the first response. D. Responses are general, not specific.
The process that uses amino acids and glycerol to form glucose is
A. ketogenesis. B. glycogenesis. C. lipogenesis. D. gluconeogenesis. E. glycolysis.