Cells that are arranged in several layers are called ________ cells.
A. cuboidal
B. stratified
C. columnar
D. squamous
Answer: B
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Whole muscle tension depends on all of the following except
a. number of muscle fibers contracting b. tension produced by each contracting fiber c. extent of motor-unit recruitment d. frequency of stimulation e. the proportion of each motor unit used at any given time
Simple diffusion is best described as substances __________.
A)moving passively against a concentration gradient B)moving actively against a concentration gradient C)moving passively down a concentration gradient D)moving actively down a concentration gradient
The ________ produces sperm and hormones
A) epididymis B) testis C) urethra D) scrotum
Developmentally, the spleen forms from
A. aggregations of lymphatic cells. B. MALT. C. ectoderm. D. endoderm. E. mesoderm.