The Oral Cavity And Teeth

Question 1

What is it?

Answer 1

-known as the buccal cavity
-contains the tongue, teeth and salivary glands

Question 2

The 3 stages

Answer 2

1. Pretension- the picking up of food
2. Mastication- breaking up of food via chewing
   3.Lubrication- coating the food with saliva making it easier to swallow

Question 3

The tooth

Answer 3

1. The centre is a pulp cavity containing blood capillaries and nerves
2. Dentine , a calcified tissue, forms the main part of the tooth
3. The surface of each tooth is covered with enamel, made up of minerals which protects the underlying structures

Question 4

Canines

Answer 4

For holding prey and tearing tissue

Question 5

Incisors

Answer 5

For holding prey and tearing tissue

Question 6

Premolars

Answer 6

Shearing flesh and grinding food

Question 7

Molars

Answer 7

Heavy grinding of food

Question 8

Dental structure for a herbivore

Answer 8

-adapted to eating plant material
-incisors are sharp used to cut and nibble
-do not possess canine teeth
-premolars and molars have flat surfaces to grind

Question 9

Carnivores

Answer 9

-adapted to eating meat
-canines are long and pointed, used to hold prey, pierce skin, and rip meat
-insider teeth are sharp to cut meat
-carnassial teeth (molars) are used to shear meat
-flaws move up and down

Question 10

Birds

Answer 10

-Beaks made up of bone, keratin and blood vessels
-adapted shape to the type of food they eat
-don’t have teeth or chew