22. The mechanism of contraction in smooth muscle is dfferent from skeletal musc

Question

22. The mechanism of contraction in smooth muscle is dfferent from skeletal muscle in that a. actin and myosin interact by the sliding flament mechansm b. the trigger for contraction is a rise in intracellular calcium c. the sites of calcium storage and regulation dter d. ATP energizes the sliding process 23. A major feature in smooth muscle that contributes to its mythmicity and peristalsis is the presence of a. troponin complex c, varicosties d. gap junctions 24. Smooth muscle is characterized by all of the following except a. it lacks troponin b. there are no thick and thin filaments c. there are no sarcomeres d. there are noncontractile intermediate filaments that attach to dense bodies 25. Which of the following is incomect a. Smocth muscle cells do not divide to increase their numbers b. Smooth muscle responds to stretch only briefly, and then adapts to new length e. Smooth muscle tension can develop over a much wider range of mucle lengths than skeletal muscle. d. Smooth muscle contraction is very energy efficient and fatigue resistant 28. While studying for an exam, you reach for coffee. Which nervous system is activated when you extend your am? a. afferent c. sympathetic d. somatic 27. Which of the neuroglia plays an active role in moving the cerebrospinal uid? a. ependymal cels b. microglia ?. olgoderdrocytes d. astrocytes 28. Schwann cells are functionally similar to a. ependymal cels b. microgla d. astrocytes 29. Which of the following regulates capillary permeability in the blood brain bamier? a. ependymal cels b. microglia d. astrocytes 30. Which part of a neuron can make synapses with other neurons? a. axon b. dendrite c cell body d. all of the above 31. Which of the following is not a special characteristic of neurons? a. They are amitotic with few exceptions b. They conduct impulses C. They are short-lived d. They have high metabolic rate. 32. Which of the following is incomect? a. Interneurons are mutipolar neurons b. Bipolar neurons are most abundant c. Sensory neurons are afferent neurons d. Motor neurons are efferent neurons.

Explanation / Answer

these are the following answers for the 2 pages multiple choice q as if the student didnt asked for to explain it only the answers are given below.

22.c

23.d

24.c

25.a

26.b

27.a

28.c

29.d

30.d

31.c

32.b

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