Question

_____ The conducting zone of the respiratory system performs all of the following functions EXCEPT

a. Humidify air

b. Exchange gases

c. Warm the incoming air

d. Get rid of inhaled debris

_____ The tonsils are located in the

a. Laryngopharynx and behind the tongue

b. Nasopharynx and the laryngopharynx

c. Oropharynx and nasopharynx

d. Oral cavity and trachea

_____ Gas exchange in the kidney occurs

a. At the glomerulus

b. At the vasa recta

c. At the peritubular capillaries

d. B and C

_____The mucosa (inside lining) of the oropharynx is composed of

a. Stratified squamous epithelium

b. Hyaline cartilage

c. Simple squamous epithelium

d. Ciliated pseudostratified columnar epithelium

Answer 1

1. The conducing zone of the respiratory system performs all of the following functions EXCEPT.

Answer: Exchange of gases.

Explanation:

The conducting zone of the respiratory system includes the organs and structures that are not directly involved in gas exchange, but perform other duties such as providing a passageway for air, trapping and removing debris and pathogens, and warming and humidifying incoming air

2. …………….The tonsils are located in the.

Answer: oropharynx and nasopharynx.

Explanation:

The palatine tonsils and the adenoid tonsil are organs consisting of lymphoepithelial tissue located near the oropharynx and nasopharynx (parts of the throat).

3. Gas exchange in the kidney occurs.

Answer: both B and C.

Explanation:

In the renal system, peritubular capillaries are tiny blood vessels, supplied by the efferent arteriole, that travel alongside nephrons allowing reabsorption and secretion between blood and the inner lumen of the nephron. Peritubular capillaries surround the cortical parts of the proximal and distal tubules, while the vasa recta go into the medulla to approach the loop of Henle.

The majority of exchange through the peritubular capillaries occurs because of chemical gradients osmosis and hydrostatic pressure. Movement of water into the peritubular capillaries is due to the loss of water from the glomerulus during filtration, which increases the colloid osmotic pressure of the blood. This blood leaves the glomerulus via the efferent arteriole, which supplies the peritubular capillaries. The higher osmolarity of the blood in the peritubular capillaries creates an osmotic pressure which causes the uptake of water. Other ions can be taken up by the peritubular capillaries via solvent drag. Water is also driven into the peritubular capillaries due to the higher fluid pressure of the interstitium, driven by reabsorption of fluid and electrolytes via active transport, and the low fluid pressure of blood entering the peritubular capillaries due to the narrowness of the efferent arteriole.

The straight arterioles of kidney, or vasa recta of the kidney, also known as vasa recta renis, are a series of arterioles in the blood supply of the kidney that enter the medulla. (Latin: vasa, "vessels"; recta, "straight"). They lie parallel to the loop of Henle.

These vessels branch off the efferent arterioles of juxtamedullary nephrons (those nephrons closest to the medulla), enter the medulla, and surround the loop of Henle. Whereas the peritubular capillaries surround the cortical parts of the tubules, the vasa recta go into the medulla and are closer to the loop of Henle.

Each straight arteriole has a hairpin turn in the medulla and carries blood at a very slow rate – two factors crucial in the maintenance of countercurrent exchange that prevent washout of the concentration gradients established in the renal medulla.

The maintenance of this concentration gradient is one of the components responsible for the kidney's ability to produce concentrated urine.

On the descending portion of the straight arterioles, sodium chloride and urea are reabsorbed into the blood, while water is secreted. On the ascending portion, sodium chloride and urea are secreted into the interstitium, while water is reabsorbed.

4. The mucosa (inside lining) of the oropharynx is composed of.

Answer: stratified squamous epithelium

Explanation:

The oral mucosa is the mucous membrane lining the inside of the mouth. It comprises stratified squamous epithelium, termed "oral epithelium", and an underlying connective tissue termed lamina propria.