Peristalsis<span> is a radically symmetrical </span><span> contraction and relaxation of muscles</span><span> that propagates in a wave</span><span> down a tube, in an anterograde direction.</span>
Answer is A
Firstly axon must reach the threshold level and then depolarisation occurs. Depolarisation phrase means sodium enters and potassium leaves the axon . Choice C can't be because main idea is the entering of sodium ions.
Answer:
A) Horner's syndrome
Explanation:
Horner's syndrome:
Horner syndrome occurs due to damage of nerve pathway from brain to eye and face.
In this condition particularly damage one side of the face and eye of the patient.
Symptoms:
Its symptoms include:
- Miosis (pupil will become small)
- ptosis (upper eyelid will drooping)
- anisocoria (pupil size will be physically different between two eyes)
- anhidrosis (there will be no sweating or little in rare cases)
So, The above mentioned condition proves the presence of Horner's syndrome.