Discuss how the osteoblast differs functionally from the osteoclast
What will be an ideal response?
Osteoblasts are bone-forming cells that perform the process of bone deposition. Osteoblasts build up the bone ECM by secreting the organic matrix and aid in the formation of the inorganic matrix. Osteoclasts are responsible for the process of bone resorption, during which they break down the bone ECM using enzymes and hydrogen ions.
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Circulation can be split into two systems: ________ circulation, from the heart to the lungs and back to the heart, and ________ circulation, from the heart to the body tissues and back to the heart.
A. pulmonary; systemic B. systemic; pulmonary C. arterial; venous D. venous; arterial
The blast cell for blood production is the
A. hemocytoblast B. chondroblast C. fibroblast D. osteoblast
The parietal cells of the gastric mucosa secrete
a. HCl. b. pepsinogen. c. intrinsic factor. d. both HCl and pepsinogen. e. both HCl and intrinsic factor.
The two divisions of the autonomic nervous system
A. use preganglionic and postganglionic neurons to innervate skeletal muscle.
B. contain autonomic ganglia to house ganglionic neurons.
C. are voluntary.
D. are composed of PNS structures only.
E. function only during sleep.