Match the words in the left column to the appropriate blanks in the sentences on the right. make certain each sentence is complete before submitting your answer.

total lung capacity
functional residual capacity
inspiratory capacity
vital capacity
1. : tv + irv + erv
2. : tv + irv
3. : erv + rv
4. : tv + irv + erv + rv

1. : TV + IRV + ERV  → Vital capacity

2. : TV + IRV  → Inspiratory capacity

3. : ERV + RV  → Functional residual capacity

4. : TV + IRV + ERV + RV → Total lung capacity

Explanation:

TV (Tidal volume), IRV (Inspiratory reserve volume), ERV (Expiratory reserve volume) & RV (Residual volume) are known as static lung volumes.

Vital capacity, Inspiratory capacity,  Functional residual capacity & Total lung capacity are known as static lung capacities and they are a combination of two or more static lung volumes.

1. : TV + IRV + ERV  → Vital capacity

It is a measure of maximum quantity of air which can be expelled out of fully inflated lungs.

2. : TV + IRV  → Inspiratory capacity

It is a measure of maximum amount of air which can be inspired into the lungs after normal expiration.

3. : ERV + RV  → Functional residual capacity

It is a measure of air which is left inside the lungs after expiration during a normal breath.

4. : TV + IRV + ERV + RV → Total lung capacity

This is a measure of maximum amount of air that can be accommodated in our lungs.

the law of original horizontality explains:   why rocks appear in layers. correct answer: b the law suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed.   the principle is used by geologists to make assumptions about the relative ages of sedimentary rocks.