Can someone tell me what the correct answers for 34-40 is please 34. Cardiac aut

Question

Can someone tell me what the correct answers for 34-40 is please 34. Cardiac autorythmic cells do not have a resting potential. a. True Tb. False 35. Pacemaker activity is defined by membrane potential slowly depolarizing between action potentials until threshold is reached. This depolarization is a result of a. passive ion movement across the membrane between AP's. b. pressure gradients across the membrane between AP's c, K+ influx into the cardiac cells 36. Which answer choice best defines cells that develop from the Agranular Leukocytes- -ymphocyte? a. B-cells b. T-cells. c. B and T cells 37. Systole is defined by a. Contraction and filing o. Contraction and relaxation c. Contraction and emptying 38. Because the ventricular mass is much larger than the atrial mass, the ventricular conduction system is much because an impulse has to move throughout a larger tissue mas before contraction can proceed. a. Faster Slower c. AP speed doesn't change 39. when considering heart conductivity, which of these will become the pace maker of the heart i the original pacemaker is compromised? a. SA node a. Av node c. Sunjie of His 40. If the answer to #37 also becomes compromised, which of these will become the pacemaker? a. SA node AV node C. Bundle of His

Explanation / Answer

34) False, the autorythmic cells/ pacemaker has a restin potential of about -60mV to -70mV.

35) a), Passive ion movement across the membrane between AP's

36) c)- B cells and T cells

37) c)- Contraction and emptying

38) b)- Slower

39) b)- AV node

40) c)- Bundle of His

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