Sudoriferous glands vary in distribution over the surface of the body. Which of the following is correct?
A) Eccrine are the most numerous, being found primarily in the axillary regions.
B) Apocrine glands are larger than eccrine, and empty secretions directly to the surface of the skin.
C) Ceruminous glands secrete cerumen, which is thought to deter insects.
D) Mammary glands are not considered a modified sweat gland.
C) Ceruminous glands secrete cerumen, which is thought to deter insects.
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Answer the following statements true (T) or false (F)
1. If an individual requires supplemental oxygen, it is first bubbled through water to remove dust and pollen. 2. The pharynx can be considered part of both the respiratory and digestive systems. 3. The auditory tubes open into the oropharynx and help in the equalization of air pressure between the middle ear and external ear. 4. The auditory tubes allow infections in the nasopharynx to spread to the middle ear. 5. The tonsils are located in the larynx.
IgG antibodies
A) are found in glandular secretions.
B) bind antigens in the extracellular fluid to B cells.
C) stimulate the release of histamine and other inflammatory chemicals.
D) are the first antibody type secreted, following initial exposure to an antigen.
E) can also cross the placenta and provide passive immunity to the fetus.
About _________% of the filtered urea is reabsorbed as compared to __________ % of glucose
Fill in the blank(s) with correct word
Which of the following is most responsible for detecting an increase in systemic arterial H+ concentration?
A. the medulla of the brainstem B. the peripheral chemoreceptors C. the central chemoreceptors D. the diaphragm E. the dorsal respiratory group