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21 fall: histology > Test 2: Lab 16: digestive stomach > Flashcards

Test 2: Lab 16: digestive stomach Flashcards

1
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A
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2
Q
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inside portion of the lip- not a lot of keratin

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2
Q
A

inside portion of the lip- not a lot of keratin

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3
Q
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outside layer of the lip
karatinized
look at hair follicle and sinus hair

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4
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A

found on top of tongue
for grooming, do not have tastebuds

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5
Q
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fungiform (mushroom shape) taste buds on lateral surfaces

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6
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A

taste bud from fungiform
3 cells present, sensory, support and basal/stem cell
(hard to see differences)

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7
Q
A

rabbit
foliate (folded rectangle)
lateral border of the tongue closest to mollars
top is stratified squamous and keratinized
taste buds on lateral border

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8
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taste buds from foliate (rectangle shaped)

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9
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single row pointed arrow toward the throat
very big, less of these then the other types of taste buds

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10
Q
A

this is the deeper layer of the tongue
longitudinal and cross sectioned skeletal muscle
can see capillary and nerves

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11
Q
A

there are 3 sets of 2 salivary glands there is also

patches of salivary (serous) glands throughout the mouth connective tissue in between

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12
Q
A

mucous glands, tongue, horse

there are random patches of mucous glands throughout the mouth as well

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13
Q
A

avian

non keratinized stratified squamous on top
keratinized stratified squamous
most muscle will be in the back of the tongue

bone in birds tongue to help stick out their tongue

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14
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A

keratinized stratified squamous layer on bottom of the tongue

hyaline cartilage of the bone of the tongue

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15
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A

close to entrance to the esophagus

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16
Q
A

serous and mixed glands can be found in the muscular layer

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17
Q

breakdown of layers in the digestive tract

A

mucosa:
epithelium- stratified squamous or similar columnar
lamina propria- areolar connective tissue
muscularis mucosa- thin layer of smooth

submucosa- dense irregular connective tissue- support things live here (arteries, veins, nerves, lymphatics)

muscularis externa- 2 layer- inner circular, outer longitudinal

outer layer: adventitia- if part of the tube, sits next to another tissue and share the last layer( example esophagus and trachea) or serosa- if outermost is a flat layer/row of cells (example small intestine)

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18
Q

in digestive tract the layers are mucosa, submucosa, muscularis externa and then adventitia or serosa. what are the differences between the last layer

A

adventitia- if part of the tube, sits next to another tissue and share the last layer( example esophagus and trachea)

serosa- if outermost is a flat layer/row of cells (example small intestine)

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19
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A

epithelium: non- keratinized squamous (more keratinized if plant eating animal

submucosa: has tubular acinar mucous glands

muscularis externa: two layers (skeletal muscle) (closer to the stomach can have some smooth muscle)

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20
Q
A

high power mucosa and submucosa

mucosa: stratified squamous, lamina propria, muscularis mucosa (little bundles)

submucosa: lots of mucous glands

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21
Q
A

esophagus, dog

enteric nervous system

plexus can be found two places: in the dense irregular connective tissue (submucosa) and between the two layers of muscularis externa

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22
Q
A

chicken

same layers: mucosa, submucosa, muscularis externa and adventia

lamina propria and muscularis mucosa are much broader in a chicken then in a mammal → glands live in the lamina propria instead of the submucosa

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23
Q

difference between chicken and mammal esophagus

A

lamina propria and muscularis mucosa are much broader in a chicken then in a mammal → glands live in the lamina propria instead of the submucosa

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24
Q
A

high power of the mucosa layer of a chicken

stratified squamous epithelium

lamina propria→ with glands and lymphatic nodules (no lymph nodes in birds)

muscularis externa→ thicker

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25
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A

can’t see lumen of the esophagus

lamina propria- with mucous gland

muscularis mucosa → thick in chickens

submucosa→ thinner in chickens

muscularis externa

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26
Q
A

storage area

less tube like, more bag like

same layers

mucosa, submucosa, muscularis externa

(the lamina propria does not have mucous glands like the lamina propria of the esophagus did)

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27
Q
A

mucosa: stratified squamous, lamina propria (no mucous glands) muscularis mucosa

submucosa- thin

muscularis externa

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28
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29
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hbjh

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45
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two layers of the dog lip

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cutaneous (hairs)

oral mucosa (inner part)

46
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skeletal muscle in the tongue is called

A

orbicularis oris

47
Q

of the tip of a cat’s tongue, which shows numerous ___papillae with keratinized ___ and an occasional ___(mushroom-like) papillae on the dorsal surface

A

filiform

spines

fungiform

48
Q

The ventral surface of a cat tongue is covered by a ___ epithelium

A

nonkeratinized, stratified squamous

49
Q

three types of cells in a taste bud

A

sensory, supporting and stem

50
Q

epithelium of a avian tongue

A

complete outer layer of stratified squamous epithelium which is thicker and nonkeratinized on most of the dorsal surface and thinner and keratinized on the ventral surface

51
Q

The bone in the bird tongue is an extension from the

A

hyoid apparatus

52
Q

avian pharynx

A

Skeletal muscle of the hyoid apparatus may be present on this section indicating that it was taken from the ventral portion of the pharynx.

53
Q

avian salivary glands are found throughout the oropharynx, the posterior tongue and in the esophagus.

They are aggregates of many compound tubular glands of the mucous type. They usually empty into a common duct to the outside. Some single glands may empty their secretions by a separate duct. The common ducts have a ___epithelium. There are no serous or mixed glands in the chicken.

A

low columnar

54
Q

the dog esopagus has branched ____ mucous (the predominant type) or mixed glands that form a continuous stratum in the ___

A

tubuleacinar

submucosa.

55
Q

The ____ is made up of longitudinal bundles of smooth muscle, which, in the dog, becomes a continuous sheet of muscle in the vicinity of the stomach.

A

muscularis mucosae

56
Q

The ___ consists of two layers of skeletal muscle,inner circular and outer longitudinal, with some smooth muscle near the caudal end.

A

muscularis externa

57
Q

In some species, e.g., the horse, pig, and cat, the entire caudal 1/3 to 1/2 of the muscularis externa is composed of ___muscle.

A

smooth

58
Q

In the dog and cow, the muscularis externa remains predominantly___ the entire length of the esophagus.

A

striated

59
Q

The___ functions as a storage area, primarily in herbivorous species. It enables birds to eat and store a large amount of food quickly and then digest it later in a more sheltered environment

A

crop

60
Q

In birds there are ___ nodules frequently found in association with the mucous salivary glands.

A

lymphatic

(no lymph nodes in birds

61
Q

mucous salivary glands are present in the region where the crop joins the esophagus but are ___ from the rest of the crop

A

absent

62
Q

During the reproductive season, the crop epithelium in the Columbiformes (pigeons and doves) rapidly proliferates and desquamates fat-laden cells. This epithelial product, known as ___, is fed along with food particles to the nestlings.

A

crop- or pigeon-milk,

63
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Greater flamingos and emperor penguins also produce a nutritive fluid and are the few examples of birds producing a substance similar to mammalian ___ to feed their young.

A

milk

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21 fall: histology (36 decks)

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