Why are ependymal cells important in the nervous system?
What will be an ideal response?
Ependymal cells have slender processes that branch extensively and make contact with the glial cells in the surrounding neural tissues. These cells may act as receptors that monitor the composition of the CSF. Some ependymal cells have cilia, which may assist in the circulation of the CSF, and a few specialized ones may assist in secretion of the CSF in a few parts of the brain.
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The lower part of the large intestine including the rectum receives blood from the
A) celiac trunk. B) inferior mesenteric artery. C) internal iliac artery. D) abdominal aorta. E) external iliac artery.
The sagittal suture is a(n)
A. cartilaginous joint. B. fibrous joint. C. synovial joint. D. synchondrosis. E. amphiarthrosis.
A patient with essential hypertension might have pressures of 200/120 mm Hg. This hypertensive state could result in all of the following changes except ________.
A) increased work of the left ventricle B) increased incidence of coronary artery disease C) increased damage to blood vessel endothelium D) decreased size of the heart muscle
Lymph transport involves all of the following EXCEPT ________
A) lymph capillary minivalve action B) milking action of active muscle fibers C) thorax pressure changes during breathing D) smooth muscle contraction in the lymph capillary walls