The primary visual cortex is located in which of the following lobes? temporal c
ID: 93041 • Letter: T
Question
Explanation / Answer
Answer 6:- The primary visual cortex is located in the occipital lobe in the back of the skull. Visual cortex or V1 is located here because all the visual information processes in the cerebral cortex, the part in the brain where these are located.
The answer in option C(Occipital lobe).
The temporal lobe is involved in processing sensory input into derived meanings for the appropriate retention of visual memory, language comprehension, and emotion association.
That is why option A is not the answer.
In humans, the cerebellum plays an important role in motor control, and it may also be involved in some cognitive functions such as attention and language as well as in regulating fear and pleasure responses, but its movement-related functions are the most solidly established.
That is why option B is not the answer.
The parietal lobe integrates sensory information among various modalities, including spacial sense and navigation , the main sensory receptive area for the sense of touch in the somatosensory cortex which is just posterior to the central sulcus in the postcentral gyrus, and the dorsal stream of the visual system. The major sensory inputs from the skin (touch, heat and cold, and pain receptors), relay through the thalamus to the parietal lobe.
That is why option D is not the answer.
Answer 7:- Cranial nerve XI is the elenth of twelve pairs of cranial nerve which is also called as Spinal accessory nerve. It supplies the sternocleidomastoid and trapezius muscles. The sternocleidomastoid muscle tilts and rotates the head, while the trapezius muscle has several actions on the scapula, including shoulder elevation and abduction of the arm.
Hence the answer is Option D.
The seventh cranial nerve or CN VII is the facial nerve. That is why the option A is incorrect.
The twelfth cranial nerve or CN XII is the hypoglossal nerve.Innervates all the extrinsic and intrinsic muscles of the tongue, except for the palatoglossus which is innervated by the vagus nerve.
That is why the option B is incorrect.
The tenth cranial nerve is the vagus nerve. It interfaces with parasympathetic control of the heart, lungs, and digestive tract.
That is why the option C is also incorrect.
Answer 8:-Hypothalamus is located posterior to the thalamus. The hypothalamus is located below the thalamus and is part of the limbic system. In the terminology of neuroanatomy, it forms the ventral part of the diencephalon. All vertebrate brains contain a hypothalamus. In humans, it is the size of an almond.
That is why the option A is correct.
Answer 9:-The central canal, also known as ependymal canal, is the cerebrospinal fluid-filled space that runs longitudinally through the length of the entire spinal cord. The central canal is continuous with the ventricular system of the brain. The fourth ventricle narrows at a region called the obex to become the central canal of the spinal cord. The fourth ventricle merges with the central canal.
That is why the Option A is correct.
The spinal canal (or vertebral canal or spinal cavity) is the space in the vertebral column formed by the vertebrae through which the spinal cord passes. It is a process of the dorsal body cavity. This canal is enclosed within the vertebral foramen of the vertebrae. In the intervertebral spaces, the canal is protected by the ligamentum flavum posteriorly and the posterior longitudinal ligament anteriorly. None the ventricle is merging in spinal canal.
That is why Opton C is incorrect.
The cerebral aqueduct, also known as the aqueductus mesencephali, mesencephalic duct, sylvian aqueduct or the aqueduct of Sylvius is within the mesencephalon (or midbrain), contains cerebrospinal fluid (CSF), and connects the third ventricle in the diencephalon to the fourth ventricle within the region of the mesencephalon and metencephalon, located dorsal to the pons and ventral to the cerebellum. The cerebral aqueduct is connected to the fourth ventricle.
That is why the Option D is incorrect.
Answer 10:- The midbrain or mesencephalon is a portion of the central nervous system associated with vision, hearing, motor control, sleep/wake, arousal (alertness), and temperature regulation.
That is why the option C is correct.
The hindbrain or rhombencephalon is a developmental categorization of portions of the central nervous system in vertebrates. It includes the medulla, pons, and cerebellum. Together they support vital bodily processes.
That is why the option A is incorrect.
The medulla oblongata (or medulla) is located in the brainstem, anterior to the cerebellum. It is a cone-shaped neuronal mass responsible for autonomic (involuntary) functions ranging from vomiting to sneezing. The medulla contains the cardiac, respiratory, vomiting and vasomotor centers and therefore deals with the autonomic functions of breathing, heart rate and blood pressure.
That is why the option B is incorrect.
The pons is part of the brainstem, and in humans and other bipeds lies inferior to the midbrain, superior to the medulla oblongata and anterior to the cerebellum.
That is why the option D is incorrect.
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