How do neurons and neuroglial cells differ in their functions as part of nervous tissue?
What will be an ideal response?
Neurons are cells in nervous tissue that generate, conduct, and receive information as nerve impulses. Neurons are excitable cells that are amitotic. Neuroglial cells are supportive cells that anchor neurons and blood vessels in place, monitor the composition of the extracellular fluid, speed up the rate of nerve impulse transmission, and circulate the fluid that surrounds the brain and spinal cord. By contrast, neuroglial cells retain the ability to divide by mitosis.
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Which type of stem cell gives rise to red and white blood cells?
What will be an ideal response?
________ are highly contagious and sexually transmitted
A) Plantar warts B) Common warts C) Genital warts D) None of the above
The end of the plateau phase is due to the ________ of Ca2+ channels and ________ of K+ channels.
A) opening, closing B) opening, opening C) closing, closing D) closing, opening
The trabeculae of spongy bone
A) are organized parallel to the long axis of the bone. B) are organized along stress lines. C) are composed mostly of cartilage. D) will collapse under stress. E) are concentrated in the cortex of the diaphysis.