Extensions from megakaryocytes that extend through blood vessel walls in red marrow are sliced off from the cells by the force of blood flow. These extensions are
A. reticulocytes.
B. promegakaryocytes.
C. myeloid stem cells.
D. late erythroblasts.
E. proplatelets.
W
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Which of the following statements best illustrates the fact that skeletal muscle is voluntary muscle?
A) Skeletal muscle is wrapped in several layers of connective tissue. The deepest layer being the endomysium. B) Skeletal muscle appears striated due to the structure of the sarcomeres. C) Skeletal muscle fibers are innervated by somatic motor neurons. D) The shivering reflex aids in maintaining body temperature.
Which gender of rodent should be taken to the cage for breeding?
a. male b. female
The most common virus class used as a vector is the
A. adenovirus. B. liposome. C. herpes virus. D. retrovirus.
The area of the retina that contains a high density of photoreceptors and enables us to focus on a particular object is called __________.
Fill in the blank(s) with the appropriate word(s).