Question

No explanation pls just the right ans

........ cleans the respiratory system and allows particles to be swallowed into the esophagus

vocal cords

mucus escalator

hair

epiglottis

Which of the following can regulate the movement of material between digestive compartments?

rhythmic contractions

mucous membranes

peristalisis

sphincters

Sensors in the ........ monitor O2 and CO2 concentrations in the blood

coronary arteries

carotid arteries

capillaries

veins

Which of the following diseases usually resulting from rupture or blockage of arteries in the head?

stroke

angina pectoris

myocardial infarction

athrosclerosis

The closed circulatory systems of vertebrates contain a more highly specialized fluid called .....

osmotic pressure

protein

plasma

blood

DNA converted into nucleotides by any of the following enzymes?

phosphatases

nucleosidases

nucleases

nucleotidases

Which of the following can inhibits the release of renin?

renin-angiotensin-aldosterone system

vasopressin

countercurrent multiplier system

atrial natriuretic peptide

Which of the following is mammalian accessory gland that secrete digestive juices through ducts into the alimentary canal?

thyroid gland

pancrease

adrenal glands

pituitary gland

Which of the following can stimulate stomach to produce gastric juices?

secretine and CCK

secretine

gastrin

CCK

Use the following figure to answer the question. In which of the labeled structures does the filtrate becomes increasingly dilute?

E

C

B

D

Answer 1

1, Mucus escalator cleans the respiratory system and allows particles to be swallowed into the esophagus. It has mucus and cilia which traps and propels the particles out of the lungs.

2, Sphincters regulate the movement of material between compartments. It is a circular, smooth muscle which surrounds the organs of digestive system

3, sensors in the carotid arteries monitor O2 and CO2 concentrations in the blood. They are important arteries as they supply blood to the brain, face, neck.

4, Stroke results due to rupture or blockage in the arteries in the brain. Blockage of blood leads to brain cell death which may end up in death if not treated soon.

Angina pectoris is chest pain due to insufficient blood in the heart muscle

Myocardial infarction is heart attack due to insufficient blood supply to heart

Atherosclerosis is due to plaque formation inside the arteries.

5, the fluid in the closed circulatory system is blood. It is unidirectional circulation of blood .

6, DNA is converted into nucleotides by the enzyme nucleosidases. Nucleosidases converts DNA into nucleotides and deoxyribose

7, Anti natriuretic peptide inhibits the release of renin when the blood volume and pressure increases.

8, Pancrease is an accessory gland. Accessory glands are organs which help in digestion of food through chemicals (enzymes). They are called accessory as the food do not directly pass through these glands.. They include the salivary glands, liver, gall bladder and pancreas.

9, Gastrin stimulates the production of gastric juices. Gastric juices are HCl, mucus, electrolytes, water,etc. It is a colourless acidic liquid produced in stomach during digestion.