60. Contraction of the s. prevent the AVntricleslesond A eject blood from thel c
ID: 3483985 • Letter: 6
Question
60. Contraction of the s. prevent the AVntricleslesond A eject blood from thel closehe atria to eject their contents into the venn E. open the valves A. connect the atria to the B. are C:. are part he laps of the Av valves to the popiltbary moles found in the i D. connect the fla E. are a part of the system of the hean The lymphatic system differs from the 62. he lymphatic system only carries fluid away from tissus. B. the lymphatic c vessels have their own "pamp" to assist ow h capillaries do not contain any luid capillaries allow free movement of fuid in and out of the capillaries. circulates fluids and cardiovascular does not E. lymph 63. The right lymphatic duct drains lymph from the A. abdomen. B. thorax. C. right arm and right side of head. D. right leg. E. left arm and left side of head. 64. The thoracic duct drains lymph into the A. left subclavian vein. B. right subclavian vein. C. right internal jugular vein. D. left brachiocephalic vein. E. left subclavian artery. 65. Lacteals are A. a type of lymphocyte. B. a nonspecific defense. C. lymphatic vessels in the lining of the small intestine. D. the sinuses inside a lymph node. E. germinal centersExplanation / Answer
60) B- The papillary muscles are muscles located in the ventricles of the heart. They attach to the cusps of the atrioventricular valves and contract to prevent inversion or prolapse of these valves on systole (or ventricular contraction)
61) D- The chordae tendineae also known as the heart strings, are cord-like tendons that connect the papillary muscles to the tricuspid valve and the mitral valve in the heart.
62) A- the lymphatic system only carries fluid away from the tissues.
63) C- The right lymphatic duct drains lymphfrom the right upper limb, right side of thorax and right halves of head and neck.
64) D- The thoracic duct drains lymph into the circulatory system at the left brachiocephalic vein between the left subclavian and left internal jugular veins.
65) C- Lacteal is a lymphatic capillary that absorbs dietary fats in the villi of the small intestine
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