1. High intensity (loud) sounds can cause deafness because they are most damagin
ID: 3479566 • Letter: 1
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1. High intensity (loud) sounds can cause deafness because they are most damaging to the A. hair cells of the spiral organ of Corti C. bones of the middle ear B. secondary tympanic membrane D. tympanic membrane 2. Regarding receptors in the skin A. all skin roceptors are encapsulated B. the receptive fields of touch receptors are uniform in area C. the nociceptors of the skin are bare nerve endings 3. A sty is caused by A. infection of the sebaceous ciliary glands C. damage to the ceruminous glands B. infection of the lacrimal gland D. infection of the Meibomian glands the accurate statements about how communication by the nervous and endocrine systems differs. A. the nervous system releases neurotransmitters at synapses at specific target cells B. the nervous system adapts relatively slowly and may respond for days to weeks C. the endocrine system reacts more slowly to stimuli, often taking seconds to days D. the endocrine system stops quickly when stimulus stops E. the endocrine system communicates by means of hormones 5. Which is NOI a function of cerebrospinal fluid? A- CSF helps to remove waste products from the bran. B. CSF helps to reduce the effective weight of the brain. C. CSF transports nutrients and chemicals to the brain. D. CSF helps to promote mitosis within neuronal tissue. E. CSF provides a liquid cushion to protect the brain from sudden movements. 6. Following a head injury, a young woman frequently loses her temper and is often depressed and otherwise "moody. What part of the brain do you think has been damaged? A. amygdala B. caudate nucleus C. putamen D. globus pallidusE. post central gyrus 7. Place in order the circulation of cerebrospinal fluid. 1. CSF flows into the arachnoid villi and drains into the dural venous sinuses. 2. CSF flows from the 3rd ventricle through the cerebral aqueduct into the 4th ventricle. 3. CSF is produced by the choroid plexus in the ventricles. 4. CSF flows through the subarachnoid space and removes waste products. 5. CSF flows through the paired lateral apertures or the single medial aperture and into the central canal of the spinal cord. A. 3, 5, 1, 3, 4 B. 3, 1, 2, 4, 5 C. 3, 2, 4, 1, 5 8. Which statements are correct concerning the parasympathetic division of the ANS? 1. contains preganglionic cell bodies in brainstem nucle 2. contains preganglionic cell bodies in the lateral homs of the T1-12 region 3. participates in the "fight-or-flight" response 4. helps conserve energy and maintain resting values for vital functions 5. contains preganglionic cell bodies in the sacral region of the spinal cord A. 1, 2, 3, 4, 5 c. 2.3,4 D. 3.4 1, 2, 3, 4Explanation / Answer
1. High noise damages the hair cells present in the organ of corti in the cochlea. The hair cells affected are present in basal part of the cochlea that receive high frequency sound waves.
Option A.
2. Nocioreceptors are receptors in the skin at the end of the axon of the sensory neuron. They respond to potentially damaging stimuli by sending signals to the spinal cord and brain. They are type IV bare nerve endings.
Option C.
3. Stye is localized inflammation of margin of eyelid. It is caused by infection of the melbomian glands that are present in edge of the eyelids.
Option D.
4. The nervous system releases neurotransmitters upon generation of action potential. The neurotransmitter is released at the neuromuscular junction and binds to receptors to mediate muscle contraction. It adapts quickly to stimuli.
The endocrine system is involved in regulation of cellular activities by release of hormones. It reacts slowly to stimuli and will continue to respond even after loss of stimulus.
Option A, C and E.
As per Chegg’s rules, it is mandatory to answer only one question.
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