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Blood within the pulmonary veins returns to the ________. -
CORRECT ANSWER-left atrium
The inner endothelial layer that lines the heart is the -
CORRECT ANSWER- endocardium
oxygen-poor blood returns to the heart and enters the -
CORRECT ANSWER- right atrium, or right upper chamber of
the heart
____is a condition in which there is an abnormal excess of
erythrocytes in - CORRECT ANSWER- polycythemia
Which of the following cells lack mitochondria? - CORRECT
ANSWERred blood cells
, Leukocytes primarily responsible for destroying bacteria -
CORRECT ANSWER-neutrophil
What vessel in the fetus connects the pulmonary trunk to the
aortic arch so that most of the blood bypasses the immature
lungs? - CORRECT ANSWER- ductus arteriosus
The formed element that is flattened, circular, lacks a nucleus,
lacks mitochondria , or ribosomes, and is red because of the
presence of hemoglobin is - CORRECT ANSWER- an
erythrocyte What cells produce surfactant? - CORRECT
ANSWER- alveolar type II cells
Pancreatic cell type that produces insulin - CORRECT
ANSWER- Beta cells (b cells)
Which of the following endocrine glands is capable of storing its
hormones extracellulary to last several months - CORRECT
ANSWERthyroid
When the diaphragm contracts, the size of the thoracic
cavity_____, the pressure within the cavity____ - CORRECT
ANSWER- increases; decreases
The____flaps over the glottis when we swallow food -
CORRECT
ANSWER-epiglottis