Class test 2

Question 1

Describe the GI tract

Answer 1

a tube within a tube

Question 2

what is the food in the mouth called

Answer 2

bolus

Question 3

what is the structure that closes over the trachea

Answer 3

Epiglottis

Question 4

what is saliva made of

Answer 4

H20 + ions + mucos + enzymes

Question 5

where can you find the intrinsic salivary glands and when do they produce saliva ?

Answer 5

mucosa, all the time

Question 6

What are the 4 types of teeth

Answer 6

Incisors, canines, premolars(2), molars (3)

Question 7

What buffers the acids in the saliva ?

Answer 7

Bicarbonate

Question 8

What is the antibacterial and antiviral agent in the saliva ?

Answer 8

Lysosomes

Question 9

List the 5 stages of digestion

Answer 9

Ingestion, Propulsion, Digestion, Absorption, Defecation

Question 10

Where do the muscles perfom peristalsis ?

Answer 10

Esophagus, stomach, small & large intestines

Question 11

Where can are the extrinsic salivary glands, when do they produce saliva ?

Answer 11

external to mouth & ducts to mouth, before and during eating

Question 12

List the 3 extrinsic glands

Answer 12

Parotoids, Submandibular, Subingual

Question 13

Heartburn is medically known as

Answer 13

GERD

Question 14

Mention the lenghts of the following organs: 1)Esophagus 2)Small intes 3)Large intes

Answer 14

1) 10” inches 2) 7m/22ft 3) 5 ft

Question 15

Name the 2 main substances in the stomach

Answer 15

Pepsin & HCl

Question 16

What is the nature of bacterial digestion in the large intestine ?

Answer 16

Anaerobic

Question 17

Name the 5 portions of the large intestine

Answer 17

Ascending, transverse, segmund, descending, rectum

Ileume, rectum, colon

Question 18

Describe the histology of the GI tract from the lumen inside out

Answer 18

1) Mucosa (epithelium,lamina,muscularis)
2) Submucosa
3) Muscularis externa (longitudinal & circular)
4) Serosa (epithelium & connective)

Question 19

Where is the heart located ?

Answer 19

Mediastinum

Question 20

What are the 2 heart coverings ?

Answer 20

Visceral precardium and Parietal precardium

Question 21

What are the 3 heart walls ?

Answer 21

Endocardium, meyocardium, epicardium

Question 22

What are the 2 septums ?

Answer 22

Interatrial and Interventricular

Question 23

What are the atrioventrical valves and the semi-lunar valves ?

Answer 23

1) Tricuspid and Bicuspid
2) Pulmonary and Aortic

Question 24

Describe the flow of deoxygentated blood in 3 steps.

Answer 24

1) vena cavas
2) atrium and ventricle
3) pulmonary arteries

Question 25

Describe the flow of oxygentated blood in 3 steps.

Answer 25

1) right and left pilmunary veins
2) atrium and ventricle
3) aorta

Question 26

Describe the cardiac cycle

Answer 26

right and left atrium contractions, right and left ventricle contractions

Question 27

Describe the heart sounds

Answer 27

Lubb and Dubb

Question 28

What are the 4 structures of the cardiac conduction system ?

Answer 28

Sinoatrial node, atrioventicular node, bundle of His, punkinje fibers

Question 29

What are the 3 artieries ?

Answer 29

Arterioles, aorta , coronary arteries

Question 30

What vessels is blood under pressue ?

Answer 30

Arteries