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प्रश्न
Stimulation of nerves of the sympathetic nervous system ______.
विकल्प
Accelerates heartbeat
Constricts pupil of eyes
Increases peristalsis
Retards heartbeat
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उत्तर
Stimulation of nerves of the sympathetic nervous system Accelerates heartbeat.
Explanation:
In order to help us escape danger, the sympathetic nervous system kicks in, increasing heart rate and blood flow to parts of the body that require more oxygen.
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| Column I | Column II | ||
| (i) | Auditory canal | (a) | Channels pressure waves of air into the middle ear. |
| (ii) | Auditory (Eustachian tube) | (b) | Collects pressure waves of air. |
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| (v) | Malleus | (e) | Equalizes pressure between the middle ear and the atmosphere. |
| (vi) | Oval window | (f) | Provide information about the spatial orientation of the head. |
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| (viii) | Round window | (h) | Transfers vibrations from a bone to a membrane. |
| (ix) | Semi-circular canal | (i) | Transfers vibrations from a bone to a bone. |
| (x) | Stapes | (j) | Transfers vibrations from a membrane to a bone. |
| (xi) | Tympanic membrane | (k) | Transmits action potential to the auditory cortex. |
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