Match the following : (1) (2) (3) (4)Action Muscle (1) Flattens (a) Scalene (2) Raises Ribs (b) Sternocleidomustoid (3) Elevates first and second ribs (c) Diaphragm (4) Elevates sternum (d) External intracostals
(c) (d) (a) (b)
Each muscle of respiration is matched with the action it performs during exercise breathing:
| Action | Muscle | Reason |
|---|---|---|
| (1) Flattens | (c) Diaphragm | The dome-shaped diaphragm contracts and flattens, increasing the vertical size of the thoracic cavity. |
| (2) Raises Ribs | (d) External intracostals | The external intercostals pull the ribs upward and outward, enlarging the chest width. |
| (3) Elevates first and second ribs | (a) Scalene | The scalenes attach from the cervical vertebrae to the first and second ribs and lift them in forced inspiration. |
| (4) Elevates sternum | (b) Sternocleidomustoid | The sternocleidomastoid inserts on the sternum and clavicle and lifts the sternum during deep breathing. |
Hence, the correct matching is (1)–(c), (2)–(d), (3)–(a), (4)–(b), that is (c) (d) (a) (b).
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Match List I with List II and select the correct answer using the codes given below :
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(a) (b) (c) (d)
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Which is odd among the following for HIV ?
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(1) Bacterial meningitis
(2) Viral infections
(3) Brain abcess and tumor
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Important Questions from Human body
- Which of the following minerals is essential for oxygen transport in the blood?
- How many pairs of false ribs are located above the floating ribs that are connected to each other by costal cartilage?
- Which mineral helps in the formation of insulin granules, digestion, metabolism and functioning of the male prostate?
- Which of these nutrients is the main energy source for the body/ human diet?
Consider the following statements regarding diabetes:
1. It is caused by the oversecretion of insulin by pancreas.
2. The glucose level increases in the blood.
3. The patient urinates frequently, loses weight and becomes lethargic.
How many of the statements given above are correct?
