normally have the shortest preganglionic axons Sympathetic ganglia D) White ramu
ID: 3519731 • Letter: N
Question
normally have the shortest preganglionic axons Sympathetic ganglia D) White ramus E) Gray ramus B) Parasympathetic ganglia C) Autonomic plexuses Which of the below responses is NOT caused by the A) Decreased heart rate B) Airway constriction C) Dilation of the pupils of the eyes ic division. D) Increased digestiorn E) Increased urine production 9. Spinal reflexes are integrated in the... A) Sensory receptor B) Sensory neuron C) Motor neuron D) E) Special cells Integration neuron or interneuron 10. These cells provide for the sense of taste. A) B) C) Olfactory hair cells Tastant cells Basal stem cells D) E) General receptor cells Gustatory cells 11. How many extrinsic eye muscles are responsible for moving the eye? A) 10 B) 12 C)6 D) 4 E) 20 12. The lens is made of layers of proteins called A) Choroid B) Ciliary bodies C) Crystallins D) Cones E) Rods 13. This structure lies between the lens and the retina. A) Vitreous chamber B) Pupil C) Iris D) Cornea E) Aqueous chamber Use the following to answer questions 14-15:Explanation / Answer
7. Most sympathetic ganglions are closer to the spinal cord in sympathetic trunk than the parasympathetic ganglia. The parasympathetic ganglions are in visceral organs walls. The sympathetic ganglions have the cell bodies in thoracic and lumbar vertebrae. The sympathetic ganglions have the shorter preganglionic axons with the autonomic ganglia present close to spinal cord. They have shorter preganglionic axons as they are closer to spinal cord than parasympathetic ganglions.
Right answer is A. Sympathetic ganglia
8. The parasympathetic nervous system consists of cranial and sacral spinal nerves. It is responsible for the body to rest and increased digestion when the body is resting. It also decreases respiration and heart rate and increased urine production. The dilation of pupils is however a response of sympathetic nervous system. Dilation of pupils of eye occurs due to occur due to contraction of the radial smooth muscles. These muscles are controlled by the sympathetic nervous system. Parasympathetic nervous system causes contraction of circular muscle. Hence, they cause constriction of pupils.
Right answer is C. Dilation of pupils of the eye.
9. Spinal reflexes are reflexes that are integrated in spinal cord. The information may be transmitted to the brain. However, it is the spinal cord that integrates the information and transmits the response to motor neurons. The receptor is a part of the neuron detecting the stimulus and the sensory neurons transmits the impulse to spinal cord. Integration system has synapses in gray matter of spinal cord. The motor neuron transmits the signal to the effector, which is a muscle or gland. Interneurons integrates the signals and relays it between the sensory neuron and the motor neuron
Right choice is E. Integration neuron or interneuron.
10. The Gustatory cells are taste receptor cells present in the taste buds. They are in close contact with the nerve ending in the tongue. Their membrane bound vesicular structures makes contact with the nerve terminals on their lateral surface.
Right choice is E. Gustatory cells.
11. The extrinsic muscles of the eye originate in the orbit bones. There are six such muscles that cause eye movements. These are:
Superior rectus: Upward rotation and towards the midline.
Inferior rectus, - Downward rotation and toward the midline
Medial rectus: Rotation toward the midline
Lateral rectus: Rotation away from the midline
Superior oblique: Rotates the eye downward and away from the midline
The inferior oblique: Rotation of eye upward and away from the midline
Right Choice is C: 6
12. Crystallins are the proteins that make up 90% of the eye lens. They are of 3 main types: ?-, ?-, and ?-crystallins. They have a structural function as they help maintain the proper refractive index of the lens. They also have a chaperone like function. Rods and cones are cells of the eye. Cilary body is the circular structure that is extension of the eye. Choroid lies between retinal and sclera and is made up of connective tissues.
Right choice: C. Crystallin
As per Chegg’s rules, only one question needs to be answered.
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