Unit 4: Bones And Teeth

Question 0

What does teeth do to help

Answer 0

Gives the food a larger surface area upon which enzymes can work. It also makes the food easier to swallow.

Question 1

What are teeth for

Answer 1

Teeth are used to bite off pieces of food. They chop, crunch, grind the food in smaller pieces.

Question 2

Which bit is the enamel

Answer 2

The top bit that shows. This is the hart part of the tooth for bitching and chewing. Protects in dentine.

Question 3

What is the dentine

Answer 3

The living part of the tooth- produces the enamel.

Question 4

What are the blood vessels

Answer 4

Supplies the tooth with nutrients. The bit inside the tooth with the nerves

Question 5

What is the pulp cavity

Answer 5

Contains the blood vessels and nerves. Bit at the top next to the nerves right in the middle of the tooth.

Question 6

What is the cement

Answer 6

Covers the dentine and aids the attachment to the jaw. The bit on e side of the tooth, in the gum.

Question 7

What is the gum?

Answer 7

Covers the jaw bone

Question 8

What are the nerves

Answer 8

Helps us detect how hard we are biting. Inside the tooth.

Question 9

What is the root

Answer 9

The part of the tooth below the gum

Question 10

What is the crown

Answer 10

The top of the tooth. Which you can see.

Question 11

What is the Incisor

Answer 11

Sharp chisel like edges to cut off the food.

Question 12

What is the canine

Answer 12

Large and pointed for tearing food

Question 13

What is the premolar

Answer 13

Flattened surfaces for crushing and girding food.

Question 14

What is the molars

Answer 14

Flattened surfaces for crushing and grinding food.

Question 15

What is a dog

Answer 15

A dog is a carnivore.,

Question 16

What do carnivores teeth do

Answer 16

Teeth adapt for catching pray and eating meat. Must be able to hold pray. Teeth must also be able to slice.

Question 17

What teeth help the dog hold onto pray

Answer 17

The canines

Question 18

What is a sheep

Answer 18

A herbivore

Question 19

What does a sheep’s teeth need

Answer 19

Main part of diet of sheep is tough grass that must be ground up before digestive.

Question 20

What are liquid skeletons?

Answer 20

Worms have liquid skeletons. Liquid is trapped in spaces inside the body. The muscle squeezes against the liquid and keeps the firm. B squeezing against different parts of its body the worm can change its shape and move.

Question 21

What are exoskeletons

Answer 21

This is where the skeletons on the outside. Hollow tubes form the limbs with gaps between them that form the joints. Many animals have these, belong to the phylum arthropods. The skeleton is often made of the substance called chitin.

Question 22

What does the exoskeleton provide

Answer 22

Protection, but it can be very heavy. Has to be shed, as animal grows. Has no protection afterwards, until another one has grown. Body has no support.

Question 23

What is endoskeleton

Answer 23

This is where the skeleton is inside the body. Usually made of bone and cartilage, rather than chitin. All vertebrates have endoskeleton and the backbone is made of small bones called vertebrae.

Question 24

What does vertebrates have

Answer 24

Have rib cage to protect lungs and heart. Skull, to protect brain and limbs joined to the body by limb girdles. (the shoulders- pectoral girdle and the hips, pelvic girdle) which allows movement.