What is the contraction in graph (d) called?
A) complete tetanus
B) incomplete tetanus
C) twitch
D) wave summation
E) treppe
A
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Cytotoxic T-lymphocytes that have killed a foreign cell may transform into
A. memory B-lymphocytes. B. natural killer cells. C. plasma cells. D. helper T-lymphocytes. E. None of the choices is correct.
At the end of a hair's growth cycle, the follicle does which of the following?
A) becomes smaller B) sloughs off the old hair when the cycle begins again C) becomes inactive D) loses connection to the hair matrix E) All of the answers are correct.
Describe the heart's location in the body
A) The heart is surrounded by the mediastinum in the anterior pericardium, deep to the sternum and superior to the diaphragm. B) The heart is surrounded by the pleural cavity in the anterior mediastinum, deep to the lungs and superior to the diaphragm. C) The heart is surrounded by the pleural cavity in the posterior mediastinum, deep to the sternum and inferior to the diaphragm. D) The heart is surrounded by the pericardium in the anterior mediastinum, deep to the sternum and superior to the diaphragm. E) The heart is surrounded by the pericardium in the posterior mediastinum, deep to the lungs and superior to the diaphragm.
Tubular reabsorption ________.
A) includes substances such as creatinine B) by active mechanisms usually involves movement against an electrical and/or chemical gradient C) by passive processes requires ATP to move solutes from the interior of the tubule to the blood D) is a way for the body to get rid of unwanted waste