In red bone marrow newly formed blood cells enter the circulation. You would expect to see many ________ type of capillaries in red bone marrow
A) metarterioles
B) continuous capillaries
C) sinusoid capillaries
D) fenestrated capillaries
C
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Answer the following statements true (T) or false (F)
1. A loss of melanin in the skin leads to a condition called cyanosis. 2. The cells of the dermis are more tightly packed than the cells of the epidermis. 3. The arrector pili are tiny involuntary muscles in the dermis. 4. Eccrine glands reach full functioning before apocrine glands. 5. Pores in the skin are outlets for sebaceous glands.
In Alaska, the longest day of summer is over 20 hours. Predict how this would affect melatonin secretion.
A. Melatonin secretion would decrease due to the extended length of time an individual is exposed to sunlight. B. Melatonin secretion would increase due to the extended length of time an individual is exposed to sunlight.
Which of the following parts of the nervous system control skeletal muscle?
A) sensory B) parasympathetic C) autonomic D) somatic E) sympathetic.
Which of the following cells is from a different lineage than the rest?
A. Myeloblast B. Reticulocyte C. Erythrocyte colony-forming unit D. Erythroblast E. Proerythroblast