The nervous system releases hormones at synapses and the endocrine system releases
neurotransmitters into the bloodstream.
Indicate whether the statement is true or false
FALSE
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Answer the following statements true (T) or false (F)
1. Positive chemotaxis is a feedback system that signals leukocyte migration into damaged areas. 2. A condition of leukocytosis indicates over 11,000 white blood cells per cubic millimeter in the blood. 3. Basophils increase in number when parasitic invasion occurs. 4. Leukopenia is an abnormally low number of leukocytes. 5. A person with type B blood could receive blood from a person with either type B or type O blood.
Which of the following statements concerning secretin is correct?
a. the most potent stimulus for secretin secretion is the presence of fat in the duodenum. b. secretin stimulates pancreatic enzyme secretion. c. secretin stimulates the secretion of bicarbonate by the pancreas d. secretin stimulates the acinar cells. e. it targets only the stomach
Energy is stored in ATP molecules in ribosomes.
Answer the following statement true (T) or false (F)
Answer the following statements true (T) or false (F)
1. The thymus gland and the thyroid gland develop from the same primary germ layer. 2. Tooth enamel and the dermis of the skin develop from the same primary germ layer. 3. The circulatory system and the muscles develop from the same primary germ layer. 4. Histogenesis is the development of different types of tissues. 5. Organogenesis must precede histogenesis.