Which of these is a cation? Check all that apply.A) O2B) K+C) Na+D) Ca2+E) Cl-
What will be an ideal response?
B, C, D
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Urine flow from the renal pelvis to the urinary bladder is produced by
A. ciliary action in the renal pelvis. B. suction from the urinary bladder. C. peristalsis of the ureters. D. hydrostatic pressure from the small intestine. E. contraction of the detrusor muscle.
An Olympic sprinter readies for a race. After the sound of the starting gun, she propels herself forward from the starting block and immediately grimaces in pain, grabbing for the back of her thigh. Within 48 hours she begins noticing extensive bruising on the back of her thigh extending into the back of the knee. She now has difficulty rising from a seated position and flexing her knee. Bending at the waist generates more pain. Which muscle is likely injured?
A. Gluteus maximus B. Biceps femoris C. Gastrocnemius D. Iliopsoas E. Popliteus
The amount of testosterone and sperm produced by the testes is dependent on the influence of FSH alone
Indicate whether the statement is true or false
Which of the following is NOT true about astrocytes?
A. They can wall off an injury site to prevent spread of inflammation. B. They can prevent toxic substances from entering brain tissue. C. They can release chemicals that promote formation of synapses. D. They can aid in the regeneration of injured neurons.