Hyoid, Larynx, Teeth

Question 1

What is the function and location of the hyoid apparatus?

Answer 1

Function = attachment structure for the tongue, and for muscles in the floor of the oral cavity.
Location = Found in the larynx, between the pharynx and the trachea.

Question 2

Is the epiglottis made from paired or unpaired cartilage?

Answer 2

Unpaired

Question 3

What is the larynx made up of?

Answer 3

9 cartilages - 6 paired, 3 unpaired. Provides rigidity and stability.

Question 4

What are the 5 muscles of the larynx?

Answer 4

1) Cricothyroid muscles
2) Cricoarytenoideus dorsalis
3) Cricoarytenoideus lateralis
4) Thyroarytenoideus
5) Vocalis

Question 5

What are teeth and what is their function?

Answer 5

Hard resistant structures in or on jaws of vertebrates.
Used for catching, masticating food, defense, other specialised purposes.

Question 6

What is heterodonty?

Answer 6

Where teeth differentiate into incisors, canines and molars

Question 7

What is homodonty?

Answer 7

Teeth of similar form (e.g., porpoise, dolphin)

Question 8

What is a dental formula?

Answer 8

The number of each type of tooth (ICPM) in each quadrant of the mouth.

Question 9

Where do teeth lie in the jaw?

Answer 9

Lie in socket in jaw bone called the alveolus

Question 10

What are the main layers of tooth?

Answer 10

Enamel (outer) = hardest substance in body
Dentin = main supporting structure of tooth
Pulp
Cementum = Covers root, attaches to periodontal ligament