Biology 125 Chapter 14 Flashcards


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1

The layer of the GI tract wall that is responsible for motility is the?

muscularis

2

The process by which undigested material is removed from the gastrointestinal tract is?

elimination

3

The process by which food is propelled through the digestive tract by alternating contraction and relaxation of smooth muscle is?

peristalsis

4

Muscular movements that mix food in the lumen of the small intestine is referred to as?

Segmentation.

5

Once a bolus of food has been formed in the mouth, it is passed by the tongue and jaws to the?

pharynx

6

The ___________ is the region of a tooth that lies below the gum line, and the entire tooth sits in a socket in the jawbone, lined with__________________.

Root, Periodontal membrane

7

The salivary glands include?

Parotid gland, sublingual gland, and submandibular gland

8

During swallowing the epiglottis?

bends to close the trachea

9

Mucin is saliva functions to?

Hold food particles together so they can be swallowed more easily.

10

Gastric juice in the stomach is composed of?

HCI, fluids secreted from gastric glands, pepsinogen

11

Gurgling of the stomach is due to?

Peristalsis contraction.

12

Pepsin is a digestive enzyme that specifically targets?

protein

13

Bile is produced by the _________ and stored in the ________.

liver ,gall bladder

14

The watery mixture of partially digested food produced in the stomach is called?

chyme

15

The pancreatic ducts connect to the small intestine at the?

Duodenum.

16

In the small intestine, amino acids and monosaccharides are moved into the mucosal cells by the process of?

Active transport.

17

The pancreas aids in the chemical digestion of food by?

Releasing digestive enzymes and biocarbonate ions into the duodenum.

18

Nutrient rich blood moves from the small intestine to the liver via?

The hepatic portal system.

19

Elimination of undigested food material, from the large intestine is controlled by?

The defecation reflex.

20

An eating disorder in which someone diets excessively or deliberately stops eating altogether is called?

Anorexia nervosa.

21

As chime leaves the stomach, the acidic nature of the partially digested food stimulates the pancreas to release the signaling molecule called?

Secretin.

22

What vitamin can be produced by the human body?

Vitamin D.

23

Water-soluble vitamins differ from fat-soluble vitamins in that water-soluble vitamins are?

Absorbed by active transport or diffusion through channels or pores.

24

What results in a higher basal metabolic rate?

Stress, fever, youth.

25

A disorder of the nervous system in which the individual eats and then deliberately vomits is?

Bulimia nervosa.

26

Trypsin is a digestive enzyme produced by the pancreas to facilitate the chemical breakdown of?

Proteins