The five stages of sleep are differentiated from each other by
A) varying levels of adrenaline found in the blood.
B) varying patterns of electrical activity generated by the cerebral cortex.
C) the five different patterns of eye movement.
D) All of the answers are correct.
Answer: B
You might also like to view...
Common sites for pressure sores to develop are:
A) shoulders blades, ears, backbone, elbows, and breasts. B) heels and ankles, knees, and toes. C) shins, forearm, elbows, and neck. D) both A and B.
Which of the following refers to the ability of the eye to adjust to variations in distance?
a. visual acuity b. accommodation c. myopia d. astigmatism
The right ventricle of the heart
A. receives oxygen-rich blood from the lungs. B. receives oxygen-poor blood from the body. C. pumps oxygen-poor blood to the lungs. D. pumps oxygen-rich blood to the body.
Genetics may add to the environmental risk for certain types of cancers
a. True b. False Indicate whether the statement is true or false