The stem cells of muscle, which multiply and differentiate into muscle fibers to repair damaged muscle, are called:
a. Intercalated cells
b. Myoepithelial cells
c. Pericytes
d. Satellite cells
e. Schwann cells
ANS: D
After muscle is damaged, macrophages infiltrate into muscle to phagocytize debris and also se-crete proteins that stimulate the differentiation of satellite cells that form new muscle fibers.
You might also like to view...
Integral membrane proteins can form channels through which ions such as Na+ and K+ can diffuse.
Answer the following statement true (T) or false (F)
Which of the three peritoneal folds that form the broad ligament suspends the ovaries?
A) mesosalpinx B) mesovarian C) mesometrium
In a similar manner as the kidney, the lung demonstrates functional unity; that is, each unit is structurally and functionally identical. The basic physiological unit of the lung is the respiratory unit, which consists of:
A. nonrespiratory and respiratory bronchioles, and alveolar ducts and sacs B. respiratory bronchioles and alveolar ducts and sacs C. bronchi, nonrespiratory bronchioles, and respiratory bronchioles D. conducting airways and alveolar ducts and sacs
The hypothalamic hormone that triggers the release of adrenocorticotropic hormone (ACTH) is
A. cortical stimulating factor (CSF). B. cortisol. C. vasopressin. D. adrenal follicle-stimulating hormone. E. corticotropin-releasing hormone (CRH).