25) pass through the A) lateral horn root and exit the spinal cord via the to en

Question

25) pass through the A) lateral horn root and exit the spinal cord via the to enter the ventral oms posterior vagal trunk, cervical plexus C) dorsal ool gray ramus communicans; sympathetic t root; lateral horns; vagal trunk ramus communicans: sympathetic trunk gang lia; ventral root ) ventral root gray ramus communicans: collateral trunk ganglia 26) The refles that reflex that ca uses a muscle to relax in response to an increase in musele a tension is the A) stret ch reflex D) ic ex B)plantar reflex C) crossed-extensor reflex biceps reflex E) tendon reflex 27) The clouding of the lens results in a A)ng of the lens results in a condition called ) pinkeye C) cataract D) retinal detachment E)nystagmus 28) Which is the best explanation for why night vision is fuzzs and indistinct? contain a single kind of visual pigment. ones come in three types, each sensitive to different wavelengths of light. A) Rods ) The fovea centralis is densely packed with cones. )Night vision uses cones present in the optic disc. E As many as 100 cones may converge on one ganglion cell. For 29-30 use the figure shown below to match the correet functions or description with the regions of the es 29) Viscous liquid that holds the retina firmly against the pigmented layer 30) Serves to vary pupil diameter.

Explanation / Answer

Answers

25) Preganglionic fibers exit spinal cord via Ventral root, Pass through Gray ramus communicantes to enter sympathetic trunk ganglia.
Option B) Ventral root, gray ramus communicates, sympathetic trunk ganglia

26) The reflex that causes a muscle to relax in response to increase in muscle tention is Tendon reflex.
- This reflex detects the increased tension ans relax the muscle to prevent tearing or breaking of tendons.
Hence, Option E) Tendon reflex

27) The clouding of lens results in the condition called as Cataract.
Option C) Cataract

28) Rods contain a single kind of visual pigment and thus night vision is fuzzy and indistinct.
- Rods are responsible for nignt vision.
- They contain only one pigment and are invloved in convergebt pathways.
- So, 100 of rods may feed to each ganglion cell.
Hence, Option A) Rods contain a single kind of visual pigment

29)
A. Viscous liquid that firmly holds the retina firmly against the pigmented layer. ----------- Viterous humor ------- Label (E)

B. Serves to vary pupil diameter ------------------ Iris ------------ Label (C)

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