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Tutor profile: Sri D.

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Sri D.
Master's in Applied Cognition and Neuroscience, Master's in Optometry and Vision Sciences
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Questions

Subject: Biology

TutorMe
Question:

Describe the term that maintains one's body in normal state?

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Sri D.
Answer:

Homeostasis means body's attempt to maintaining steady internal environment. In order to perform basic functions of life, there must be consistency within in the body and in environment inside cells called intracellular fluid. The regulation of composition and volume of fluids that surround the cells are extracellular fluids which helps to keep this environment constant.

Subject: GRE

TutorMe
Question:

Two sides of a triangle have length 6 and 8. Which of the following are possible areas of triangle?

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Sri D.
Answer:

The possible areas would be 2, 12 and 24 based on 1/2*b*h and following the thumb of third rule.

Subject: Anatomy

TutorMe
Question:

Explain briefly the anatomy of Cranial nerves?

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Sri D.
Answer:

Cranial nerves arise from the brain and brain stem. There are 12 in total which are indicated by roman numerals.They have their passage through foramina of the skull and are involved in both sensory and motor functions. the nerves in order are: 1 Olfactory (sensory) involved with smell and is attached to olfactory bulb 2. Optic (sensory) involved with transmission visual information to brain, is attached to diencephalon via optic chiasm 3. Oculomotor ( both sensory & motor) involved with adjustment of eye lens for near or far vision, moves eyeball, eyelids and helps in constriction of pupils. This is attached to midbrain 4.Tochelar (both sensory and motor) moves the eyeballs by sending impulses to superior oblique muscles. it is attached to dorsal midbrain 5. Trigeminal (mixed): It consists of Ophthalmic, Maxillary and mandibular nerves. These control the facial muscles. It is attached to Pons 6 Abducens (mixed) : it moves the eyeballs outwards. It is attached to medulla oblongata. 7 Facial (mixed) : involved with facial expression, taste etc. It is attached ot medulla oblongata 8 Vestibulocochlear (mixed, mainly sensory) involved with coordination, equilibrium and hearing. It is attached to medulla oblongata 9 Glossopharyngeal (mixed) involved with swallowing and secretion of saliva 10 Vagus (mixed) involved with voluntary muscles that affect swallowing, speech etc. It is attached to medulla oblongata 11 Accessory (mixed) involved with sternocleidomastoid and trapezoid muscles. It is attached to medulla oblongata 12 Hypoglossal (mainly motor) provides motor innervation to intrinsic muscles of tongue and glossal muscles. It is also attached to medulla oblongata

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