Digestive Part I - slides 116 through 167 Flashcards Preview

AP II B5 Digestive > Digestive Part I - slides 116 through 167 > Flashcards

Flashcards in Digestive Part I - slides 116 through 167 Deck (140)
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1

Parts of the Tongue:

Fungiform papillae

Filiform papillae

Circumvallate papillae

foliate papillae

lingual tonsil

palatine tonsil

2

Tongue:

Considered an accessory digestive organ

Composed of ___ ____ covered with a mucous membrane

With associated muscles forms the...

Tongue:

Considered an accessory digestive organ

Composed of skeletal muscle covered with a mucous membrane

With associated muscles forms the floor of the oral cavity

3

Tongue:

Divided into symmetric lateral halves by a ___ ___ that extends entire length

Tongue:

Divided into symmetric lateral halves by a median septum that extends entire length

4

Tongue:

Attached inferiorly to the ___ bone, styloid process of the ___ ___, and _____

Tongue:

Attached inferiorly to the hyoid bone, styloid process of the temporal bone, and mandible

5

Tongue:

___ ___ is a fold of mucous membrane in the midline of the ventral aspect (undersurface) of the tongue

Lingual frenulum

6

Functions of the lingulum frenulum?

-Attaches to the floor of the mouth

-Aids in limiting the movement of the tongue posteriorly

7

___ in the lamina propria of the tongue secrete Watery serous fluid which Contains lingual lipase

Lingual glands (Von Ebners glands)

8

Lingual glands (Von Ebners glands) are where and secrete what?

in the lamina propria of the tongue secrete Watery serous fluid which Contains lingual lipase

9

Acts on as much as 30% of dietary triglycerides

Gets secreted in the mouth, but is not activated until in the stomach

Lingual lipase

10

Where is lingual lipase secreted?

Where is it activated?

Gets secreted in the mouth, but is not activated until in the stomach

11

Dorsal (upper surface) and lateral surfaces of tongue are covered with

papillae

12

Which parts of the tongue have papillae?

Dorsal (upper) and lateral surfaces

13

Nipple shaped projections of the lamina propria covered with stratified squamous epithelium

papillae

14

Many contain taste buds (receptors for gustation or taste)

Some lack taste buds but have receptors for touch instead ---- Helps to increase the friction between food and tongue making it easier for tongue to move food

papillae

15

types of papillae?

Vallate

Fungiform

Foliate

Filiform

16

Approximately 12 form an inverted ā€œVā€ shaped row at the back of the tongue
Each of the 12 contain 100-300 taste buds

Vallate (circumvallate) papillae

17

Mushroom shaped elevations scatter over entire tongue surface


Each contains about 5 taste buds

Fungiform papillae

18

Located in small trenches on lateral margins of tongue

Most of their taste buds degeneate in childhood

Foliate papillae

19

Pointed, threadlike; found on entire surface of tongue

Contain no taste buds but do have tactile receptors

These help to increase friction between tongue and food

Filiform papillae

20

These help to increase friction between tongue and food

Filiform papillae

21

Mechanical digestion results from mastication (chewing)


Food is reduced to a soft, flexible, easily swallowed mass called a ___

Food molecules begin to mechanically break apart in ___

This is important as ___ can only react with food in a liquid environment

Food is reduced to a soft, flexible, easily swallowed mass called a bolus

Food molecules begin to mechanically break apart in saliva

This is important as enzymes can only react with food in a liquid environment

22

Two enzymes that contribute to chemical digestion are secreted in the mouth

Salivary amylase
---Initiates breakdown of carbohydrates
---Chloride ions in saliva activate this in the mouth
---Stomach acid deactivates this



Lingual lipase
---Initiates breakdown of triglycerides (lipids)
---Activated in the stomach by stomach acid

23

---Initiates breakdown of carbohydrates
---Chloride ions in saliva activate this in the mouth
---Stomach acid deactivates this

Salivary amylase

24

---Initiates breakdown of triglycerides (lipids)
---Activated in the stomach by stomach acid

Lingual lipase

25

When food is first swallowed, passes from mouth into pharynx

Funnel-shaped tube that extends from the internal nares to the esophagus posteriorly and to the larynx anteriorly

Composed of skeletal muscle and lined with mucous membrane

26

Pharynx is Divided into three parts:

Nasopharynx- functions only in respiration

Oropharynx- function in digestion and respiration

Hypo/Laryngopharynx- function in digestion and respiration

27

functions only in respiration

Nasopharynx-

28

function in digestion and respiration

Oropharynx-

29

function in digestion and respiration

Hypo/Laryngopharynx-

30

Swallowed food passes from mouth into

oropharynx then laryngopharynx