Answer:
Our ear consists of
1 Outer ear (pinna) which passes through auditory canal leading to the ear drum (tympanum)
2 The middle ear consists of three tiny bones malleus, incus and stapes. the three bones are collectively called ear ossicals.
3 Inner ear or membranous labyrinth has two main parts-- cochlea and spiral-shaped, and semicircular canals.
The pinna collects the sound waves and conducts them through the external auditory canal. They finally strike on the ear drum which is set into vibration.
hope it helps you....
plz mark brainliest if you think this was the answer you wanted to see
Explanation:
Answer:
what you are doing ??? why are you asking these
Answer:
Surgical cases tend to have a higher relative weight because they are generally more resource extensive than medical cases
Explanation:
Answer:
True
Explanation:
Pacemaker cells, unlike other neurons in the body, can depolarized themselves (and therefore can fire action potentials) without the need of an external innervation of the autonomic nervous system.
Each class of pacemaker cells has its own intrinsic rate.
For example, sinoatrial node rate is 60-100 bpm (the normal heart frequency).
The atrioventricular node is also part of the electrical conduction system of the heart. When the sinoatrial node fails, atrioventricular node takes the lead (40-60 bpm).
