Question

1. The organs of the digestive system are traditionally separated into two major groups: the alimentary canal, and the ___________.

1. supporting digestive organs
2. accessory digestive organs
3. gastrointestinal tract

2. The hollow organ that receives bile from the liver is called the

1. Duodenum
2. Gallbladder
3. Stomach

3. Nearly all nutrient absorption occurs in the ____________.

1. large intestine
2. small intestine
3. stomach

4. For ingested food to become available to the cells, it must first be broken down into smaller diffusible molecules in a process called ___________.

1. absorption
2. reabsorption
3. digestion

5. In a tooth, which of the following is filled with blood vessels?

1. root canal
2. periodontal ligament
3. dentin

6. Bile assists the digestion of

1. Carbohydrates
2. Protein
3. fats

7. The __________ arteriole drains the glomerular capillary bed.

1. afferent
2. efferent
3. portal

8. The section of the renal tubule closest to the glomerular capsule is the ___.

1. nephron loop
2. distal convoluted tubule
3. proximal convoluted tubule

9. During tubular reabsorption, components of the filtrate move from the bloodstream into the tubule.

1. True
2. False

Answer 1

Answer 1: b) Accessory digestive organs

Organs like liver,pancreas,gall bladder,salivary glands, tongue etc helps in the process of digestion even though they are not a part of alimentary canal.So they are known as accessory digestive organs.

Answer 2: b) Gall bladder

Gall bladder, a hollow sac like organ, receives and store the bile produced by the liver before it is released into the small intestine.

Answer 3: b) Small intestine

Due to presence of numerous small finger like projections called villi and microscopic structures called microvilli on the villi, the mucosal surface of large intestine gets large surface area for the absorption of nutrients from food materials.

Answer 4: c) Digestion

Digestion is the process of breaking down of large macroscopic food materials into small microscopic absorbable forms.

Answer 5: a) Root canal

Root canal lumen of tooth cantains nerves and blood vessels.

Answer 6: c) Fats

Bile helps in the absorption of fat from the food materials.Bile causes the emulsification of large fat molecules and assist their absorption.

Answer 7: b) Efferent

Efferent arterioles carry blood away from the glomerular capillary bed and hence causes drainage of glomerular capillary bed.

Answer 8: c) Proximal convoluted tubule

Proximal Convoluted Tubule ( PCT ) is a part of tubular portion of nephron located closest to the glomerular capsule.

Answer 9: b) False

During tubular reabsorption, the components of filtrate move from the tubular lumen into the bloodstream.