Which of the following is a muscle tissue that pumps blood throughout the body?
A. Skeletal muscle
B. Cardiac muscle
C. Smooth muscle
D. Endocardium
B
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At what neuron location does summation occur?
a. dendrites b. cell body c. axon hillock d. Schwann cells e. axon terminals
If you lose your sensitivity to the sound of the waves but still notice a seagull flying above you, what is happening?
A. sensory adaptation in sight involving thermoreceptors B. sensory adaptation in sight and hearing involving mechanoreceptors C. competition between processing of hearing and sight involving light receptors D. sensory adaptation in hearing involving mechanoreceptors E. general sensory diminution involving mechanoreceptors and thermoreceptors
Modern botanists think that all plants evolved from a common ancestor that was an ancient green alga,
because:a. plants are green like green algae. b. plants live on land. c. they have green leaves. d. they are autotrophs. e. they share many biochemical and metabolic traits.
These serve as buffers helping to maintain the pH of the blood.
A. phospholipids B. platelets C. leukocytes D. salts