Anatomy Test 2

Front 1

What are two abnormalities that occur with the pharyngeal grooves

Back 1

Branchial sinuses and branchial fistula

Front 2

Branchial (cervical) sinuses

Back 2

This is an abnormality that occurs when the cervical groove fails to obliterate. On the outside mucous is discharged thru opening of neck and internally it is open to phyarynx

Front 3

What is the first endocrine gland to develop

Back 3

Thyroid gland

Front 4

What germ layer makes up the thyroid?

Back 4

endoderm. vental out pocketing

Front 5

What connects the thyroid and the pharynx

Back 5

thyroglossal duct

Front 6

What connects the right and left lobes of the thyroid

Back 6

isthmus

Front 7

What happens to the thyroglossal duct?

Back 7

degenerates

Front 8

What do you call the proximal portion that persist as a blind pit on the tongue

Back 8

Foramen cecum

Front 9

What type of abnormality can become of the thyroid

Back 9

Thyroglossal duct cyst. It forms on the tongue or anterior neck

Front 10

This is an abnormality that presents with infants without a thymus and parathyroid and hypothyroidism, meaing easy to get infections and facial abnormalities

Back 10

Digeorge syndrom

Front 11

The location and number of this can vary.

Back 11

ectopic parathyroid

Front 12

What pharyngeal arch does the tongue come from

Back 12

1st pharyngeal arch mesenchyme

Front 13

How does the tongue develop in the anterior 2/3

Back 13

Medial lingual swelling and lateral lingual swelling

Front 14

What is another word for medial lingual swelling

Back 14

tuberculum impar

Front 15

Hypopharyngeal eminence

Back 15

Copula - from mesenchyme of the 3rd 4th arches

Front 16

What do you call the line where the anterior portion and posterior portions meet?

Back 16

Terminal sulcus

Front 17

What nerve supplies the anterior 2/3 of the tongue
posterior 1/3

Back 17

Trigeminal nerve
glossopharyngeal nerve

Front 18

What nerve supplies the muscles of the tongue. whats the exception

Back 18

hypoglossal nerve
the exeption is palatoglossus ----> vagaus n.

Front 19

What happens during the 6-7th week

Back 19

Solid epithelial buds in the oral cavity grow into mesenchyme (NC cells)

Front 20

These are the glands to develop, come from the ectoderm and grow toward the ears and form glands and ducts

Back 20

Parotid glands

Front 21

This gland comes from endodermal buds

Back 21

submandibular

Front 22

This gland has multiple endodermal buds

Back 22

sublingual glands

Front 23

From what structure does the eye arise from

Back 23

Neural tube at the level of the diencephalon

Front 24

Optic grooves in the neural fold do what and form what

Back 24

they invaginate and form hollow diverticula which becomes the opticle vessicle

Front 25

The optic vessicle projects from the wall of ?

Back 25

Diencephalon

Front 26

What connects the optic vessicle and the forebrain?

Back 26

Optic stalk

Front 27

What does the optic vesicle do to the ectoderm?

Back 27

It induces the overlying ectoderm to thicken and form lens placodes (lens primordia)

Front 28

The lens placode invaginates and becomes __________

Back 28

Lens pit

Front 29

The edges of the lens pit come together and form the ______?

Back 29

Lens vessicle

Front 30

The optic vessicle, after inducing ectoderm to become lens placode does what

Back 30

It invaginates and becomes the optic cup (lens primordia)

Front 31

What does the optic cup do on its ventral surface?

Back 31

involutes to accomadate the hyaloid artery which becomes the choroid fissure

Front 32

What is the optic stalk continuous with what

Back 32

Thalamus of the diencephalon

Front 33

What is the central retinal artery and where is it found

Back 33

Hyaoloid artery
optic cup

Front 34

What does the outer layer of the optic cup become

Back 34

pigmented layer of the retina

Front 35

What does the inner layer of the optic cup become

Back 35

The neural retina containing rods and cones

Front 36

What replaces the optic stalk

Back 36

optic nerve with axons

Front 37

Where does the iris develop from

Back 37

The iris develops from the rim of the optic cup.

Front 38

What layers of the optic cup is the iris derived from

Back 38

Both layers inner and outer

Front 39

What part of the eye controls the lens

Back 39

ciliary body

Front 40

What part of the optic cup becomes pigmented layer of the ciliary body

Back 40

outer layer of optic cup

Front 41

what part of the optic cup becomes nonpigmented part of the ciliary body

Back 41

inner layer of optic cup

Front 42

The lens vessicle is a ________ germ layer

Back 42

ectoderm

Front 43

Where do the fibers in the lumen of the lens vesicle come from?

Back 43

They come from cells in the posterior wall of the lens vesicle

Front 44

Mesenchyme surrounding the optic cup differentiate into what two things?

Back 44

Choroid
sclera

Front 45

T/F The choroid is the inner, vascular layer of the eye?

Back 45

True

Front 46

T/F the sclera is the outer, fibrous layer

Back 46

True

Front 47

What germ layer does the cornea dvp from

Back 47

Surface ecto
mesenchymal meso
Neural Crest mesenchyme

Front 48

The anterior chamber is space in the mesenchyme that separates the ____ from the ______?

Back 48

Iris from the cornea

Front 49

Where is the posterior chamber

Back 49

Space in the mesenchyme posterior to developing iris.

Front 50

Name the different parts of the developing eye

Back 50

optic groove
optic vessicle
optic placode
optic pit
lens vessicle
optic cup
hyaloid artery
optic stalk
optic nerve
retina
ciliary body
iris
choroid
sclera
chambers