Ependymal cells are most likely found at which structure of brain
A) 10
B) 2
C) 9
D) 3
E) 7
Ans: B) 2
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Answer the following statements true (T) or false (F)
1. If the GFR is too low, needed substances may pass so quickly through the renal tubules that they are not absorbed and instead are lost in the urine. 2. In the kidneys, the countercurrent mechanism involves the interaction between the flow of filtrate through the loop of Henle of the juxtamedullary nephrons (the countercurrent multiplier) and the flow of blood through the limbs of adjacent blood vessels (the countercurrent exchanger). This relationship establishes and maintains an osmotic gradient extending from the cortex through the depths of the medulla that allows the kidneys to vary urine concentration dramatically. 3. The ureter transports urine from the kidney to the urinary bladder. 4. Water reabsorption through the proximal convoluted tubule is termed obligatory water reabsorption, whereas water reabsorption through the distal convoluted tubule is termed facultative water reabsorption 5. The position of the kidneys behind the peritoneal lining of the abdominal cavity is described by the term retroperitoneal.
Which of the following is not a source of ionizing radiation?
A) Atomic and nuclear weapons B) Cosmic rays from outer space C) Cholesterol and triglycerides D) Smoke detectors
An example of fungal infection is ________
A) Athlete's foot B) Thrush C) Common cold D) A and B only
Keratin is important in the formation of skin cell networks
Indicate whether the statement is true or false