Digestive System: Quiz 1

Question 1

Oral Cavity

Answer 1

a space bordered in front by the mouth, behind the oropharynx, and on the sides by the inner wall of the cheeks. Helps with eating and chewing.

Question 2

Hard Palate

Answer 2

composed of the palatine processes of the maxillae and palatine bones, helps form the roof of the oral cavity. Provides space for the tongue to move freely.

Question 3

Soft Palate

Answer 3

composed of the connective tissue and a mucous membrane. Helps form the roof of the oral cavity. elevates the nasopharynx.

Question 4

Uvula

Answer 4

small grape like structure suspended from the posterior edge of the soft palate. helps prevent food or liquid from moving into the nasal cavity during swallowing.

Question 5

Lips

Answer 5

aka: Labia; protect the anterior opening of the mouth

Question 6

Tongue

Answer 6

Made of skeletal muscle, important in speech, taste, and the movement of food toward the teeth for chewing and swallowing.

Question 7

4 Sections of Tongue

Answer 7

Lingual Frenulum, Labial Frenulum, Papilae, Tastebud

Question 8

Lingual Frenulum

Answer 8

thin mucous membrane that holds the tongue to the floor of the mouth

Question 9

Labial Frenulum

Answer 9

holds lips to gingiva of mouth; thin mucous membrane

Question 10

Papilae

Answer 10

raised areas on the tongue, increase frictional surface of the tongue

Question 11

Tastebud

Answer 11

occur on the tongue on the sides of the papillae, sense of taste

Question 12

Teeth

Answer 12

2-1-2-3 (adults) 2-1-0-2 (children)

Question 13

4 Sections of Teeth

Answer 13

Incisors, Canine, Premolars, Molars

Question 14

Incisors

Answer 14

flat, bladelike front teeth that serve to nip food

Question 15

Canine

Answer 15

pointed teeth that function in shearing food

Question 16

Premolars

Answer 16

serve to grind food

Question 17

Molars

Answer 17

grind food

Question 18

Pharynx

Answer 18

membrane-lined cavity behind the nose and mouth; connects mouth to esophagus

Question 19

4 Sections of Pharynx

Answer 19

Nasopharynx, oropharynx, laryngopharynx, palatine tonsils

Question 20

Nasopharynx

Answer 20

above the oropharynx, leads to the nasal cavity. connects nasal passages to the respiratory system.

Question 21

Oropharynx

Answer 21

space behind the oral cavity that serves as a common passageway for air, food, and water. passageway for air, food, and water.

Question 22

Laryngopharynx

Answer 22

below the oropharynx, leads to the larynx and esophagus. passageway for air, food, and water.

Question 23

Palatine Tonsils

Answer 23

paired masses of lymphatic tissue at the posterior end of the oral cavity

Question 24

Larynx

Answer 24

hollow muscular organ that forms an air passage to the lungs; holds the vocal cords; surrounding by cartilage rings. Fight off bacteria that enters through the mouth and nose.

Question 25

Digestive System Function

Answer 25

mechanical and chemical breakdown of food and absorption of nutrients, maintain homeostasis

Question 26

Explain the 4 layers of the Alimentary Canal

Answer 26

Mucosa: protects tissue and carries absorption Submucosa: glands, blood vessels, nerves Muscular Layer: smooth muscle tissue, circular and longitudinal fiber, pushes food AKA peristalsis Serosa: visceral peritoneum, outer covering of the tube, lubricates surfaces