Chapter 3 Midterm Questions

Question 1

The second pharyngeal pouch becomes the?

Answer 1

palatine tonsils

Question 2

The third pharyngeal pouch becomes the?

Answer 2

inferior parathyroids and thymus

Question 3

The fourth pharyngeal pouch becomes the?

Answer 3

superior parathyroids

Question 4

The fifth pharyngeal pouch becomes the?

Answer 4

ultimobranchial body

Question 5

True or False

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

Answer 5

True

Question 6

What kind of cells does the thymus produce?

Answer 6

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

Question 7

What does the ultimobranchial body fuse with?

Answer 7

thyroid

Question 8

What type of cells does the ultimobranchial body contribute?

Answer 8

parafollicular cells to the thyroid

Question 9

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

Answer 9

True

Question 10

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

Answer 10

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

Question 11

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

Answer 11

mandible

Question 12

The temporal is muscle grows from the?

Answer 12

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

Question 13

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

Answer 13

sphenoid bone (and pterygoid bone into temporal fossa)

Question 14

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

Answer 14

True

Question 15

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

Answer 15

condyle

temporal fossae

Question 16

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

Answer 16

Reichert cartilage

Question 17

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

Answer 17

hyoid cartilage

thyroid gland

Question 18

True or False

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

Answer 18

True

Question 19

What are the several units that the mandible develops as?

Answer 19

condylar unit 
body
angular process
coronoid process
alveolar process

Question 20

What is the simple suture of the face?

Answer 20

uncomplicated band of tissue between bony fronts

Question 21

What is a condylar unit of the mandible?

Answer 21

forms articulation, allowing movement of the mandible

Question 22

What is the body unit of the mandible?

Answer 22

center of all growth and function

Question 23

What is the angular process unit of the mandible?

Answer 23

responds to the lateral pterygoid and masseter masticatory muscles

Question 24

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

Answer 24

True

Question 25

The 1st pharyngeal groove become the?

Answer 25

external auditory and and membrane deepens to become tempanic