Reflex Arc

Q. In the knee jerk reflex, the effector and receptor are respectively,

1. muscle spindle and motor endplate
2. afferent and efferent neuron
3. motor endplate and muscle spindle
4. sensory and motor neuron

Q.

What type of reflex is the knee jerk?

Q.

What is reflex action? State its importance.

Q.

Watering of mouth is a

1. reflex action

2. action

3. good

4. bad

Q.

What is reflex action ?Explain how it occurs?

Q. Tissue present in the brain

Q.

Regarding the Ear and hearing in Humans, Identify the correct statement(s) _____.

1. The range of human hearing is from 20 Hz to 20 kHz

2. The ear is most sensitive to frequencies between about 100 Hz and 300 Hz

3. The endolymph of the scala media is similar in composition to plasma.

4. Conductive hearing loss is loss of hearing due to defects in the sound conducting structures and due to defects in the vestibulocochlear nerve

Q.

Identify the parts labelled 1 to 5.

1. 1. Effector 2.Efferent neuron 3.Integration center 4.Afferent neuron 5.Receptor

2. 1.Receptor 2.Afferent neuron 3.Integration center 4.Efferent neuron 5.Effector

3. 1.Receptor 2.Afferent neuron 3.Efferent neuron 4.Integration center 5.Effector

4. 1.Effector 2.Afferent neuron 3.Integration center 4.Efferent neuron 5.Receptor

Q. Label the highlighted parts:

1. Receptor
2. Afferent neuron
3. Efferent neuron
4. Effector

Q.

Briefly explain the following:

Reflex action

Q.

State whether the following are simplex reflex, coordinated reflex, or neither of the two

Sweating in hot whether

Q.

Who demonstrated conditioned reflex for the first time?

1. R.A. Fisher

2. J.B.S. Haldane

3. Pavlov

4. Alfred Russel

Q.

Briefly explain the term reflex action.