ch 25 smartbook questions

Question 1

choose all that are true about muscularis externa

Answer 1

• usually consists of 2 layers of muscle
• it is responsible for propelling food forward through the digestive tract
• the outer layer of muscle run longitudinally

Question 2

choose the functions of lips and cheeks

Answer 2

• speech articulation
• sucking
• pushing food between the teeth for chewing

Question 3

the most pointed teeth that act to puncture food are which of the following

Answer 3

canines

Question 4

which 2 structures are essential for all chewing, speech, sucking, blowing

Answer 4

• cheecks
• tongue

Question 5

match each tooth with its role in eating

Answer 5

• premolars and molars: crush and grind food
• incisors: bite off pieces of food
• canines: puncture and shred food

Question 6

which describes a periodontal ligament

Answer 6

collagen fibers that hold a tooth in place

Question 7

what is the root canal of a tooth filled with

Answer 7

pulp

Question 8

the portion of a tooth that is above the gum is known as the _____ of the tooth

Answer 8

crown

Question 9

enamel covers the surface of the crown that the root of each tooth

Answer 9

false

Question 10

which is true of cement of the teeth

Answer 10

it can regenerate

Question 11

what type of salivary glands are the lingual, labial, buccal glands

Answer 11

intrinsic

Question 12

choose all the phase of swallowing that are involuntary

Answer 12

• pharyngeal
• esophageal

Question 13

the longitudinal wrinkles in the lining of the stomach are called gastricq

Answer 13

rugae

Question 14

which described the receptive-relaxation response of the stomach

Answer 14

smooth muscle remains relaxed until stimulated to contract by extrinsic nerves

Question 15

what is a lacteal

Answer 15

a lymphatic capillary within a villus used for lipid absorption

Question 16

what is a goblet cell

Answer 16

a mucus-secreting epithelial cell

Question 17

the middle section of the small intestine is the

Answer 17

jejunum

Question 18

which are found in the upper half of intestinal crypts

Answer 18

enterocytes and goblet cells

Question 19

what is the function of the brush border

Answer 19

to increase surface area for absorption

Question 20

tubular glands within the mucosa and submucosa of the small intestine are called intestinal

Answer 20

crypts
glands

Question 21

what are the components of intestinal juice

Answer 21

water and mucus

Question 22

which describes segmentation

Answer 22

non-migrating constrictions and relaxation along the intestine

Question 23

which are found in the upper half of intestinal crypts

Answer 23

enterocytes and goblet cells

Question 24

choose all that are acheived with small intestinal muscles contractions

Answer 24

• an increased contact of chyme with the intestinal lining
• the mixing of chyme with secretions
• the propelling of contents along the intestines

Question 25

choose all found in intestinal juice

Answer 25

* mucus * water

Question 26

muscular contractions called ____ involve alternating ring-like constrictions at several places along the intestine

Answer 26

segmentation

Question 27

the digestion of starch by amylase results in the production of which

Answer 27

* oligosaccharides * maltose

Question 28

where are micelles made

Answer 28

in the liver

Question 29

how is water absorbed from the digestive tract

Answer 29

osmosis

Question 30

what are mass movements

Answer 30

strong peristalic contractions of the large intetine occuring 1-3 times/day

Question 31

the gut microbiome refers to the many species of bacteria residing where

Answer 31

large intestine

Question 32

which muscle aids in the voluntary retention of feces

Answer 32

puborectalis muscle