During depolarization
A. calcium ions move inside the neuron.
B. many potassium ions move outside the neuron.
C. sodium ions move inside the neuron.
D. electrons stream along the axon.
Answer: C
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The somatic nervous system carries impulses from the brain and spinal cord to ________
A) Smooth muscles B) Skeletal muscles C) Cardiac muscle tissue D) All of the above
Wolff's law is concerned with ________.
the diameter of the bone being dependent on the ratio of osteoblasts to osteoclasts vertical growth of bones being dependent on age the function of bone being dependent on shape the thickness and shape of a bone being dependent on stresses placed upon it
Which of the following is NOT true of the cranial meninges?
A. The pia mater is attached to the outer surface of the brain. B. The arachnoid mater is the middle layer of the meninges. C. The subarachnoid space contains cerebrospinal fluid. D. The dura mater is a single layer around the brain, just as it is around the spinal cord. E. All of these are true of the cranial meninges.
The prominent indentation on the medial surface of the kidney is the
A) calyx. B) pelvis. C) ureter. D) hilum. E) pyramid.