Test: Nervous System - NEET MCQ

Cerebellum serves to coordinate the voluntary movements of skeletal muscles as well as posture, balance, and equilibrium.
Hence, the correct answer is Option A.

The correct sequence of meninges from inner to outer side is:

- Pia mater (innermost)
- Arachnoid (middle layer)
- Dura mater (outermost)

Explanation:
- Pia mater is the innermost layer that closely adheres to the brain and spinal cord.
- Arachnoid is the middle layer that lies between the pia mater and the dura mater.
- Dura mater is the tough outermost layer providing protection and support.

Therefore, the correct sequence is piamater -> arachnoid -> duramater.

The somatosensory cortex is a part of your brain that receives and processes sensory information from the entire body. Other names of somatosensory cortex include somesthetic area and somatic sensory area.This part of the brain is essential for receiving sensory information from the body and processing it to initiate important movements that are required to deal a particular situation. It receives sensations of touch, pain, and vibration from the entire body.

Auerbach's plexus (or myenteric plexus) provides motor innervation to both layers of the muscular layer, having both parasympathetic and sympathetic input, whereas Meissner's plexus has only parasympathetic fibres and provides secretomotor innervation to the mucosa nearest the lumen of the gut. It arises from cells in the vagal trigone also known as the nucleus ala cinerea, the parasympathetic nucleus of origin for the tenth cranial nerve (vagus nerve), located in the medulla oblongata. The fibres are carried by both the anterior and posterior vagal nerves. The myenteric plexus is the major nerve supply to the gastrointestinal tract and controls GI tract motility.

Parkinson's disease (PD) is a degenerative, progressive disorder that affects nerve cells in deep parts of the brain called the basal ganglia and the substantia nigra. Nerve cells in the substantia nigra produce the neurotransmitter dopamine and are responsible for relaying messages that plan and control body movement.

Nissl's granules are formed by rough endoplasmic reticulum (RER) having rosettes of free ribosomes (polyribosomes) which are a site of protein synthesis.

When a person gets addicted to alcohol, many serious health problems can occur due to consumption of alcohol. The first part of brain to be affected first is Cerebellum. The will power and self control of the person gets reduced. Control over emotions and moral sense also gets reduced. Loss of muscle coordination also occurs as cerebellum is affected. As a result, speech becomes incoherent. Inflammation of axons also occur which causes neuritis.

The hypothalamus is a part of the brain that is responsible for various hormone production. 

The hormones produced by this area controls temperature, thirst, hunger, sleep, circadian rhythm, moods, and the release of some hormones. 

It is located below the thalamus and above the brainstem.

It is also known as the thermostat since it regulates the temperature of the body according to the changes in one's environment. 

Thus, the correct answer is option A.

In higher vertebrates (reptiles, birds, mammals) there are 12 pairs of cranial nerves- olfactory (I), optic (II), oculomotor (III), trochlear (IV), trigeminal (V), abducens (VI), facial (VII), vestibulocochlear (VIII), glossopharyngeal (IX), vagus (X), accessory (XI), and hypoglossal (XII).

Abducens nerve is the sixth cranial nerve. It is a motor nerve supplying the lateral rectus muscle of the eye, originating in the dorsal part of the tegmentum of the pons, passing through the cavernous sinus, and entering the orbit through the superior orbital fissure. 
So, the correct answer is option B.

Frogs have ten pairs of cranial nerves, which pass information from the outside directly to the brain, and ten pairs of spinal nerves, which pass information from the extremities to the brain through the spinal cord. They are:
1. olfactory, 2. optic, 3. oculomotor, 4. trochlear, 5. trigeminal, 6. abducens, 7. facial, 8. auditory, 9. glossopharyngeal, 10. vagus.

The cerebellum is at the back of the brain, below the cerebrum. It's a lot smaller than the cerebrum. But it's a very important part of the brain. It controls balance, movement, and coordination (how your muscles work together).

Cerebrum is main part of the brain it controls most of the activity of our body. It sense taste, smell, hearing, etc.. olfactory lobe is responsible for the smell.