What is the inner, gelatinous region of each intervertebral disc called?
A. Lamella
B. Annulus fibrosus
C. Chondral ring
D. Nucleus pulposus
E. Articular ring
Answer: D
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Aquaporins are believed to be present in red blood cells and kidney tubules, but not in any other cells in the body
Indicate whether the statement is true or false
How is calcium concentration in the body regulated?
A) By chloride and phosphate concentrations in the plasma B) By sodium and calcium concentrations in the plasma C) By hormones D) By the parasympathetic nervous system E) By the sympathetic nervous system
The property of living things to change position is called ________.
Fill in the blank(s) with the appropriate word(s).
In the testis, haploid cells that have completed meiosis are called:
a. Leydig cells b. Sertoli cells c. Spermatids d. Spermatocytes e. Spermatogonia