In addition to storage of white blood cells, the lymphatic system is also responsible for ________.
A. producing pathogens to fight infections
B. making fluids to support the cardiovascular system
C. production of some types of white blood cells
D. maturation of some types of red blood cells
Answer: C
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Which type of muscle will NOT regenerate once it is severely damaged?
A. Smooth B. Visceral C. Cardiac D. Skeletal
Which of the following statements is correct?
A) Myelin sheaths form an insulating layer around the axons of neurons in the central and peripheral nervous systems. These structures function to slow the transmission of impulses along the axon. B) Myelin sheaths form an insulating layer around the axons of neurons in the central and peripheral nervous systems. These structures function to speed up the transmission of impulses along the axon. C) Myelin sheaths form an insulating layer around the axons of neurons only in the peripheral nervous system. These structures function to speed up the transmission of impulses along the axon. D) Myelin sheaths form an insulating layer around the cell bodies of neurons in the central and peripheral nervous systems. These structures function to speed up the transmission of impulses along the axon.
The autonomic nervous system is composed of ganglia in the central nervous system and ganglia in the periphery
Indicate whether the statement is true or false
The middle layer of the heart is called the myocardium and is composed of cardiac muscle and constitutes the bulk of the heart wall
a. True b. False Indicate whether the statement is true or false