Question

please answer this question

Answer 1

Answer:

i think

(1) reflex action

(2) interneuron

(3) 1) sensory neuron

2)dorsal root

3)white matter

4)grey matter

(4)

5)that is inter neuron and it connects the sensory neuron and the motor neuron.it generates quick responses according to the sensory impulses.

6)that is related muscle and it withdrawsthe hand by the action of the muscles.

(5)

Answer 2

Answer:

1. CSF assists the brain by providing protection, nourishment, and waste removal. CSF provides hydromechanical protection of the neuraxis through two mechanisms. First, CSF acts as a shock absorber, cushioning the brain against the skull.
2. This insulation acts to increase the rate of transmission of signals. A gap exists between each myelin sheath cell along the axon.
3. Cerebrum: is the largest part of the brain and is composed of right and left hemispheres. It performs higher functions like interpreting touch, vision and hearing, as well as speech, reasoning, emotions, learning, and fine control of movement.
4. A major role of the thalamus is to support the motor and language system. Damage to the thalamus can lead to permanent coma.
5. Cerebellum: is located under the cerebrum. Its function is to coordinate muscle movements, maintain posture, and balance

choose odd one out

1. photon
2. walking
3. cranium
4. pons
5. corpus luteum

The diagram given below is a representation of a certain phenomenon pertaining to the nervous system. Study the diagram and answer the following questions.

i) The phenomenon that is depicted here is the reflex action which is an involuntary and instant movement in response to stimuli.

(ii) The term for the point of contact between the two nerve cells is called the synapse.

(iii) (1). Sensory (Afferent neuron) (2). Dorsal ganglion

(3). White matter (4). Grey matter

(iv) The function of 5 (Synapse): It transmits the sensory impulse from sensory neurons to the motor neurons.

The function of 6 (Motor neuron/Efferent neuron): It transmits the command to the effectors part (e.g. muscles).

v) The arrangement of neurons in the spinal cord differs from that of the brain. In the brain, Gray matter is present on the outside and white matter on the inner side. In Spinal cord, white matter is present on the outside and Gray matter on the inner side.

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