A cell or an organ that responds to commands of the control center in negative feedback is termed a(n)
A) receptor.
B) thermoregulator.
C) hypothalamus.
D) effector.
E) stimulus.
D
You might also like to view...
Why does a splenectomy lead to an increased risk of septicemia?
A. The spleen is a huge reservoir of monocytes. B. It can cause excessive phagocytosis of the formed elements. C. The spleen is pulpy and vascular, causing it to bleed easily. D. The spleen has a delicate capsule that is difficult to surgically repair.
Before external respiration occurs, the concentration or partial pressure of oxygen in the alveoli is ________ than in the pulmonary capillaries.
A. lower B. higher C. no different
What type of cell is common in both white pulp and germinal centers of lymph nodes?
A) Lymphocytes B) Phagocytes C) Erythrocytes D) Adipocytes
Which of the following is NOT true of the anatomy of the sacrum?
A. The median sacral crest consists of the fused spinous processes of the sacral vertebrae. B. The inferior end of the sacrum articulates with the coccyx. C. Nothing passes through the sacral foramina; they are membrane-covered openings. D. The sacral canal is a continuation of the vertebral canal. E. All of these are true of the anatomy of the sacrum.