| 41. | The aorta is a large artery that branches into many smaller arteries, arterioles, and ultimately capillaries.
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| 42. | This allows arterioles to increase resistance in response to increased blood pressure and thus maintain constant blood flow.
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| 43. | Excessive vasodilation, or insufficient constriction of the resistance blood vessels ( mostly arterioles ), causes hypotension.
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| 44. | In theory, this phenomenon could cause extensive damage to the vessel wall, in particular of arterioles.
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| 45. | Histologically, glomus tumors are made up of an afferent arteriole, anastomotic vessel, and collecting venule.
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| 46. | The glomerulus is a capillary tuft that receives its blood supply from an afferent arteriole of the renal circulation.
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| 47. | Pericyte cells can contract and decrease the size of the arterioles and thereby regulate blood flow and blood pressure.
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| 48. | The cells increase the production of nitric oxide and Prostaglandins to vasodilate the afferent arterioles and increase renin release.
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| 49. | Additionally, vasopressin selectively contracts efferent arterioles probably through the V 1 R, but not the afferent arteriole.
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| 50. | Additionally, vasopressin selectively contracts efferent arterioles probably through the V 1 R, but not the afferent arteriole.
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