Lymph movement is assisted by
A. contraction of skeletal muscle.
B. contraction of smooth muscle in lymph vessel.
C. pressure changes in the thorax during respiration.
D. compression of lymphatic vessels.
E. All of these choices are correct.
E
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After leaving the thoracic cavity and passing over the outer border of the first rib, the subclavian artery becomes the
A) radial artery. B) brachial artery. C) clavicular artery. D) axillary artery. E) ulnar artery.
Chromatin is the term for the loosely coiled appearance of DNA in a non-dividing cell.
a. true b. false
The filtration of plasma that generates approximately 80 liters/day of filtrate occurs in the __________.
proximal convoluted tubule distal convoluted tubule renal corpuscle nephron loop
When renin is released from the kidney,
A) angiotensin II is converted to angiotensin I. B) angiotensin I formation is triggered. C) angiotensin I increases salt reabsorption at the kidneys. D) blood pressure goes down. E) blood flow to the kidneys decreases.