DIGESTION PP pt1

Question 1

Incomplete tracts

Answer 1

Flatworms such as Schistosoma and other flatworms that have a single opening in their open sac body form

Question 2

Complete tracts

Answer 2

All animals that have a mouth to ingest food and an anus for excreta to exit the body, such as snails, octopi, dogs, and humans.

Question 3

incomplete digestive tract have what type of body

Answer 3

Sac body plan (one opening)

Question 4

incomplete digestive tract include what classes

Answer 4

Cestoda & Trematoda
Taenia saginata is a cestode (e.g.Tapeworm from beef)
Taenia solium is a cestode (e.g.Tapeworm from pork)
Schistosoma mansoni is a trematode

Question 5

Continuous feeders are

Answer 5

filter feeders that include sponges and bivalves such as clams and oysters.

Question 6

Discontinuous feeders are

Answer 6

all animals that eat when hungry and stop eating when full, e.g. humans

Question 7

sponges are the only animal to lack what?

Answer 7

true tissues

Question 8

sponges have what type of body?

Answer 8

Saclike bodies perforated by many pores

Question 9

what animals have flagellae that generate water currents that flow through pores into central cavity (spongocoel) and out of the osculum, the excretory structure in the living sponge and are SESSILE & FILTER FEEDERS

Answer 9

sponges

Question 10

Omnivores

Answer 10

accommodate both vegetation and meat

Question 11

Herbivores

Answer 11

Incisors for clipping & premolars/molars for grinding

Question 12

carnivores

Answer 12

Pointed incisors and enlarged canines to shear off pieces of flesh small enough to swallow

Question 13

the human digestive system is ___

Answer 13

complete

Question 14

the human digestive system is a tube…

Answer 14

tube-within-a-tube plan

Question 15

Begins with a ___ and ends in an ___

Answer 15

mouth and anus

Question 16

human digestive tract provides digestion that is

Answer 16

entirely extracellular: meaning digestive enzymes and chemicals are secreted by
The wall of the digestive tract,
or
By nearby accessory glands

Question 17

tree major pairs of salivary glands?

saliva that contains___
Salivary amylase that___

Answer 17

Saliva contains salivary amylase

Salivary amylase initiates starch digestion

Question 18

tongue is composed of?

Answer 18

striated muscle

Question 19

tongue does what 2 things?

Answer 19

Mixes chewed food with saliva

Forms mixture into a bolus

Question 20

during salivary amylase, starch is turned into

Answer 20

maltose

Question 21

Digestive and respiratory passages come together in ____ then

Epiglottis
Covers opening into trachea
Keeps food from air passages (most of the time)

Answer 21

the pharynx, then separate

Question 22

Soft palate closes off nasopharynx during

Answer 22

swallowing

Question 23

Epiglottis

Covers opening into ____ and keeps food from____

Answer 23

trachea, Keeps food from air passages (most of the time)

Question 24

Esophagus does what?

Answer 24

Moves food to stomach by peristalsis

Question 25

Peristalsis

Answer 25

Rhythmical contraction to move contents in tubular organs

Question 26

stomach has deep ___

Answer 26

folds