Skull

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Question 14

Bones are hard structures and cannot be bent. But, we can still bend our elbow, knee, etc. How is this possible?

Q.

What are fibrous joints?

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Question 1
Which of the following statements is correct about receptors?

(a) Gustatory receptors detect taste while olfactory receptors detect smell
(b) Both gustatory and olfactory receptors detect smell
(c) Auditory receptors detect smell and olfactory receptors detect taste
(d) Olfactory receptors detect taste and gustatory receptors smell

Q.

Identify the bones of the skull from 1 - 5.

1. 1. Ethmoid, 2. Sphenoid, 3. Frontal, 4. Parietal, 5.Temporal, 6.Occipital

2. 1. Ethmoid, 2. Frontal, 3. Sphenoid, 4.Temporal, 5. Parietal, 6. Occipital

3. 1. Ethmoid, 2. Frontal, 3. Temporal, 4. Sphenoid, 5. Occipital, 6. Parietal

4. 1. Frontal, 2. Ethmoid, 3. Parietal, 4. Temporal, 5.Sphenoid, 6.Occipital

Q. What happens if the vermiform appendix is damaged ?

Q. Match the following:
$\begin{array}{cc}\text{Column - I}& \text{Column - II}\\ \text{i. Ethmoid}& \text{a. are situated at the sides and base of the skull}\\ \text{ii. Sphenoid}& \text{b. contains the large opening of the foramen magnum}\\ \text{iii. Frontal}& \text{c. situated on the sides and the roof of the skull}\\ \text{iv. Parietal}& \text{d. forms the forehead.}\\ \text{v. Temporal}& \text{e. is found in the nasal septum}\\ \text{vi.Occipital}& \text{f. houses the optic canal}\end{array}$

1. (i) $\Rightarrow$ f, (ii) $\Rightarrow$ d, (iii) $\Rightarrow$ e, (iv) $\Rightarrow$ a, (v) $\Rightarrow$ c, (vi) $\Rightarrow$ d

2. (i) $\Rightarrow$ b, (ii) $\Rightarrow$ c, (iii) $\Rightarrow$ f, (iv) $\Rightarrow$ a, (v) $\Rightarrow$ a, (vi) $\Rightarrow$ d

3. (i) $\Rightarrow$ a, (ii) $\Rightarrow$ b, (iii) $\Rightarrow$ d, (iv) $\Rightarrow$ e, (v) $\Rightarrow$ e, (vi) $\Rightarrow$ f

4. (i) $\Rightarrow$ d, (ii) $\Rightarrow$ a, (iii) $\Rightarrow$ b, (iv) $\Rightarrow$ c, (v) $\Rightarrow$ f, (vi) $\Rightarrow$ e

Q. there are some organisms which grow teeth through out their life ( like crocodiles ). what is the term used for them ?

Q. what is alveolar sac and what function it is doing