Chapter 3 Midterm Questions Flashcards

1
Q

The second pharyngeal pouch becomes the?

A

palatine tonsils

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2
Q

The third pharyngeal pouch becomes the?

A

inferior parathyroids and thymus

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3
Q

The fourth pharyngeal pouch becomes the?

A

superior parathyroids

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4
Q

The fifth pharyngeal pouch becomes the?

A

ultimobranchial body

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5
Q

True or False

The endodermal lining of the pharyngeal pouches differentiates into several important organs

A

True

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6
Q

What kind of cells does the thymus produce?

A

t cells (destroy invading microbes and are important for the body’s immune system)

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7
Q

What does the ultimobranchial body fuse with?

A

thyroid

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8
Q

What type of cells does the ultimobranchial body contribute?

A

parafollicular cells to the thyroid

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9
Q

True or False

After the fifth week, no other pharyngeal grooves are seen externally as the tissues of the second and fifth arch grow over the other arches and grooves make contact with each other

A

True

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10
Q

Each of the five pharyngeal arches contains a right and a left?

A

aortic arch vessel (leads from heart through arches to face, brain, and posterior regions of body)

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11
Q

The medial pterygoid and masseter muscles attach as a sling at the angle of the _______

A

mandible

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12
Q

The temporal is muscle grows from the?

A

coronoid process (into the temporal fossa, and lateral pterygoid muscle)

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13
Q

The pterygoid muscle extends from the condyle anteriorly to the ____ ______

A

sphenoid bone (and pterygoid bone into temporal fossa)

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14
Q

True or False

Substantial evidence shows that the contact point of the malleus and incus is the articulation of the lower jaw for the first 20 weeks of prenatal life

A

True

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15
Q

The second temporomandibular joint, which is the articulation of the _________ and the ____ ______, becomes functional

A

condyle

temporal fossae

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16
Q

What is the rod-shaped cartilage of the second or hyoid arch called?

A

Reichert cartilage

17
Q

The fourth arch contributes to the Hyloid which then supports the thyroid gland?

A

hyoid cartilage

thyroid gland

18
Q

True or False

The fifth arch has no adult cartilage derivatives and the sixth arch cartilage forms the laryngeal cartilage

A

True

19
Q

What are the several units that the mandible develops as?

A
condylar unit 
body
angular process
coronoid process
alveolar process
20
Q

What is the simple suture of the face?

A

uncomplicated band of tissue between bony fronts

21
Q

What is a condylar unit of the mandible?

A

forms articulation, allowing movement of the mandible

22
Q

What is the body unit of the mandible?

A

center of all growth and function

23
Q

What is the angular process unit of the mandible?

A

responds to the lateral pterygoid and masseter masticatory muscles

24
Q

T/F tissues of the pharyngeal arches 2-5 disappear and by overgrowing and smoothing the neck?

A

True

25
Q

The 1st pharyngeal groove become the?

A

external auditory and and membrane deepens to become tempanic