How are oligodendrocytes and Schwann cells similar? How are they different?
What will be an ideal response?
Oligodendrocytes and Schwann cells are both types of macroglia that provide the myelin covering that insulates some axons. Oligodendrocytes form myelin in the CNS, and Schwann cells supply the myelin for the PNS. An oligodendrocyte puts out a number of branches that wrap themselves around the axons of adjacent neurons. Because a single oligodendrocyte can myelinate axons from an average of 15 different neurons, these macroglia contribute to the structural stability of the brain and spinal cord. In contrast, one Schwann cell provides a single myelin segment on a peripheral axon. It takes large numbers of Schwann cells to myelinate a peripheral nerve.
You might also like to view...
Any response that is made with the aim of doing harm is referred to as
a. aggression. b. assertion. c. circumvention. d. sublimation.
Dr. Kosmo van Nostrand studies how psychoactive drugs affect the brain by crossing the blood-brain barrier. This is known as the study of
A. psychopharmacology. B. object relations. C. social neuroscience. D. phenomenology.
Although in the middle-childhood years childrenstill remain attached to their parents, they
should demonstrate increasing amount of ____________________ a. identity formation. b. critical thinking about their parents' attitudes. c. independence. d. disorganized style.
Two studies found that by their fourth year after high school, people generally are __________ in agreeableness, conscientiousness, and openness and __________ in neuroticism, while extraversion remained unchanged.
A. lower; lower B. higher; higher C. lower; higher D. higher; lower