Question 3-ANSWER IN SHORT-
1. What is impulse
2. Give 2 examples of reflex actions.
3. What are motor nerves?
4. Write the function of cerebrospinal fluid.
5. What is reflex action?
Answers
Answer:
1) ans : Impulse is a term that quantifies the overall effect of a force acting over time.
2) ans : examples of reflex action are:
When light acts as a stimulus, the pupil of the eye changes in size.
Coughing or sneezing, because of irritants in the nasal passages.
3) ans : These nerves control your movements and actions by passing information from your brain and spinal cord to your muscles.
4) ans : Cerebrospinal fluid is a clear fluid that acts as a cushion for the brain and maintains overall central nervous system. Cerebrospinal fluid assists the brain by providing protection, nourishment, and waste removal. Cerebrospinal fluid provides hydromechanical protection of the neuraxis through two mechanisms. First, Cerebrospinal fluid acts as a shock absorber, cushioning the brain against the skull.
5) ans : Reflex action is the extremely quick, automatic, sudden action in response to something in the environment.