Question

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Answer 1

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(a) The parts labeled are:

1- Enamel

2 - Dentine

3 - Pulp

4 - Gum

5 - Crown

6 - Cement

(b) The type of teeth shown in the given figure has only one root. Hence it is a canine or incisor that is used to bite or pierce.

(c) The structure labeled '3' is thc pulp. It is a soft connective tissue that is present in the pulp cavity of the tooth. It contains the nerve fibers, lymph vessels, blood capillaries. From the crown of the tooth. the pulp opens through the pulp cavity at the base of the root.

(d) The type of teeth mentioned in the figure and its function are as follows:

Type of teeth Number of teeth Function

Incisors 8 Used to cut and bite

Canines 4 Used to tear and hold food

Premolars 8 Used to grind and crush food

Molars 12 Used to grind and crush food

Q5..The dental formula represents the arrangement of teeth in each half of the upper and the lower jaw. The entire formula is multiplied by two to represent the total number of teeth.

The dental formula for milk teeth in humans is:milk teeth in humans

Each half of the upper jaw and the lower jaw has 2 incisors, 1 canine, and 2 molars. Premolars are absent in milk teeth hence the zero.

The dental formula for permanent teeth in humans is: permanent teeth in humans

Each half of the upper jaw and the lower jaw has 2 incisors, 1 canine, 2 premolars, and 3 molars. An adult human has 32 permanent teeth.

Answer 2

hope it helps you

(a) The parts labeled are:

1- Enamel

2 - Dentine

3 - Pulp

4 - Gum

5 - Crown

6 - Cement

(b) The type of teeth shown in the given figure has only one root. Hence it is a canine or incisor that is used to bite or pierce.

(c) The structure labeled '3' is thc pulp. It is a soft connective tissue that is present in the pulp cavity of the tooth. It contains the nerve fibers, lymph vessels, blood capillaries. From the crown of the tooth. the pulp opens through the pulp cavity at the base of the root.

(d) The type of teeth mentioned in the figure and its function are as follows:

Type of teeth Number of teeth Function

Incisors 8 Used to cut and bite

Canines 4 Used to tear and hold food

Premolars 8 Used to grind and crush food

Molars 12 Used to grind and crush food

Q5..The dental formula represents the arrangement of teeth in each half of the upper and the lower jaw. The entire formula is multiplied by two to represent the total number of teeth.

The dental formula for milk teeth in humans is:milk teeth in humans

Each half of the upper jaw and the lower jaw has 2 incisors, 1 canine, and 2 molars. Premolars are absent in milk teeth hence the zero.

The dental formula for permanent teeth in humans is: permanent teeth in humans

Each half of the upper jaw and the lower jaw has 2 incisors, 1 canine, 2 premolars, and 3 molars. An adult human has 32 permanent teeth.