Answer the following statements true (T) or false (F)
1. When blood serum enters a lymph node it is called lymph.
2. It is easier for substances to move into a lymph node than into a blood capillary.
3. Lymph does not circulate through the lymph system the same way blood circulates through the circulatory system.
4. Thymosins are hormones released by the thymus gland, which influence the development of B lymphocytes.
5. The spleen can hold about 100 mL of blood.
1. FALSE
2. TRUE
3. TRUE
4. FALSE
5. FALSE
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Jonah was in a car accident that destroyed the function of his adrenal cortex. Which of the following is most likely to occur as a result of this damage?
A. Increased aldosterone levels B. Increased water reabsorption in the blood C. Decreased regulation of plasma sodium and potassium D. Decreased urine volume
Which type of burn appears inflamed and feels tender but has no blisters?
A) first-degree B) second-degree C) third-degree D) fourth-degree E) full-thickness
Which of the following chemical substances are NOT commonly released by mast cells?
a) Heparin b) Histamine c) Nitric oxide d) Proteases e) All of these choices
The structure that overlies the spiral organ, and which is firmly attached to the walls of the cochlear duct, is the
A) basilar membrane. B) tectorial membrane. C) endolymph. D) malleus. E) vestibular duct.