Lab Test

An increase in blood glucose levels will cause release of which hormone?

insulin

Fat as chylomicrons enter the:

lacteals

Carbohydrate digestion begins in the mouth with salivary amylase. Which are the other enzymes which help complete carbohydrate digestion?

pancreatic amylase and brush border enzymes

Trypsin and chymotrypsin are:

pancreatic protein digesting enzymes

Which of the following best describes the action of bile?

It works by a physical process of breaking down large molecules into smaller ones

Which pH provided the highest pepsinogen activity?

acidic

Absorption of fatty acids, amino acids and monosaccharides occurs in the:

small intestine

What is the action and target tissue of prolactin?

stimulates milk production from mammary glands

An increase in levels of serum calcium will cause release of which hormone?

calcitonin

What does salivary amylase do to starch?

converts it to monosaccharides

What is released when fat digestion occurs?

fatty acids

Monosaccharides and amino acids after absorption first travel to the:

liver through the portal vein

In the absence of bile salts fat will not be absorbed or digested properly in the small intestine and will be passed out in the feces.

True

Which of the following applies to brush border enzymes?

1) They are produced by the enterocytes of the small intestine 2) Lactase, maltase and aminopeptidase are some examples of brush border enzymes 3) They help digest carbohydrates and proteins in the small intestine 4) All of the above**

Which of the statements below best explains the function of bile salts during digestion?

Bile salts emulsify fats and break them down into smaller particles which gives the enzyme lipase a greater surface area to act on during digestion of fats.

TRH released by the anterior hypothalamus in response to decreased metabolic rate, acts on the anterior pituitary causing it to release TSH. This further acts on the thyroid gland and causes production and release of T3 and T4. Concentrations of T3 and T4 rise and increase metabolic rate which subsequently returns to normal. This in turn acts on the hypothalamus and anterior pituitary preventing further release of TRH and TSH resulting in decrease of T3 and T4 levels. This is an example of.

Negative feedback mechanism

Salivary amylase acts at a neutral pH. Would salivary amylase be active in the stomach?

No