What is the responsibility of the sodium/potassium pump?
A. Reestablish and maintain resting membrane potential.
B. Prepare the neuron for another nerve impulse.
C. Pump sodium out of the cell using active transport.
D. All of these are correct.
Answer: D
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Microtubules are important as structural proteins. They may be used to support the cell, as pathways for the movement of motor proteins, and to ensure the even division of chromosomal material during mitosis
Thus, having the ability to regulate the growth of these proteins is necessary for survival. Discuss some of the ways in which microtubule growth can be regulated. What will be an ideal response?
Exudate is
A. blood that escapes capillaries, passes beyond the skin and leaves the body. B. increased perfusion of capillary beds within the region of an injury. C. lymph that flows away from the heart and toward the site of an injury. D. fluid that leaves capillaries to "wash" the interstitial space of an injured tissue. E. clotting proteins that wall off microbes and prevent them from spreading through the bloodstream.
Match each of the following terms with its function or description.
a. sclera b. cornea c. retina d. rods e. cones f. iris g. pupil h. choroid i. conjunctiva j. lens 1. _____ Sometimes called the window of the eye 2. _____ Colored part of the eye 3. _____ Hole in the eye that lets light in 4. _____ Layer of the eye that keeps light from scattering in the eye 5. _____ Structures in the retina that are able to respond to color 6. _____ White of the eye 7. _____ Mucous membrane covering part of the sclera 8. _____ Structure that is changed in shape by ciliary muscles to facilitate focus of light 9. _____ Innermost layer of the eye 10. _____ Structures in the retina that respond in dim light
Select the correct statement about blood flow
A) It is relatively constant through all body organs. B) Blood flow through the entire vascular system is proportional to cardiac output. C) It is measured in mm Hg. D) It is greatest where resistance is highest.