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WorksheetsNeural Control and Coordination- Quiz 11
Total questions: 10
Worksheet time: 4mins
How do parasympathetic neural signals affect the working of the heart ?
Reduce both heart rate and cardiac output.
Heart rate is increased without affecting the cardiac output.
Both heart rate and cardiac output increase.
Heart rate decreases but cardiac output increases.
Which one of the following statements is not correct ?
Retinal is the light absorbing portion of visual photo pigments.
In retina the rods have the photopigment rhodopsin while cones have three different photopigments.
Retinal is a derivative of Vitamin C.
Rhodopsin is the purplish red protein present in rods only.
Which one of the following is not a refractive medium of the eye?
Lens
Vitreous humour
Aqueous humour
Pupil
In mammalian eye, the ‘fovea’ is the center of the visual field, where
Only rods are present
More rods than cones are found
High density of cones occur, but has no rods
The optic nerve leaves the eye
The fovea of eye
has the lowest light threshold
is the region of highest visual activity
contains only green and red cones
contains only rods
Cavity of vitreous humour (gel) is –
Behind the lens
In front of lens
Between choroid and retina
Between choroid and sclera
Cavity of aqueous humour (watery fluid) is –
Behind the lens
Between choroid and retina
Between cornea and lens
Between lens and retina
Which of the following options is wrong?
Eye muscles are attached with sclera
Visual purple is concerned with dim light, while visual violet is concerned with bright light
The colour differentiation is done by cones
None
If Chlorolab of retina is damaged which colour can not be visualised?
Green
Red
Yellow
Many colours
Which of the following statements is not correct ?
In the knee-jerk reflex, stimulus is the stretching of muscle and response is its contraction
An action potential in an axon does not move backward because the segment behind is in a refractory phase
Depolarisation of axon causes outside negatively and inside positively charged
Rods are very sensitive and contribute to daylight vision
