mushroom-shaped organ which is one of the largest organs of the body hose normal weight in adults is 1,300 grams (3 lbs)

Technically, the brain is called

which are the four division of the brain

parts of the brain stem

diencephalon parts

constitue about 7/8 of the total weight of the brain

inferior to the cerebrum and posterior to the brain stem

is the outermost cranial meninx

is continuous with the spinal dura mater and extends into the fissure that divides the left and right hemispheres of the cerebrum (flax Cerebri

a dura mater fissure between the cerebrum and cerebellum

is actually the periosteal layer of the skull bones. This is a tough, fibrous layer containing veins and arteries that nourish the bones

is the middlemost layer of the meninges found between the dura mater and pia mater.

arachnoid membrane is made up of what?

mater and pia mater. This is made up of delicate connective tissue. In between the arachnoid membrane and the pia mater is the subrachnoid space which contains the??

is the delicate innermost meningeal layer. It directly covers, and is attached to, the outer surface of the brain, and dips down into the Suici between the raised ridges of the brain. This has a large number of small blood vessels

are spaces / cavities in the brain that communicate with each other

central canal of the spinal cord and with the subarachnoid space

ventricles include?

colorless fluid of watery consistency, which is essentially an ultrafiltrate of blood

what chemical cerebrospinal fluid contain?

how cerebrospinal fluid formed

also may be formed of cerobrospinal fluid

the entire central nervous system contais?

provides a special environment in which the brain floats, cushioning it against hard blows and sudden movements, or provides a protective buoyancy for the brain

Maintenance of homeostasis by helping to control the chemical environment of the central nervous system, and 3. It conveys excess components and unwanted substances away from the extracellular fluid and into the venous portion of the blood circulatory system.

The largest and most complex structure of the nervous system

Consists of two cerebral hemispheres, the right and left halves or hemispheres. These are separated by a deep groove called

cerbrum Composed of upfoldings called

convolutions; deep downfoldings called

shallow downfoldings

Internally, the two hemispheres are connected by a large bundle of transverse fibers composed of white mater called

Its longitudinal fissure between the hemispheres is an extension of cranial dura mater called

4 lobes of cerbrum

The sulci that divide the cerebral hemisphere into lobes are central sulcus (separating the frontal lobe from parietal lobes:

what sulci separating the frontal lobe from the temporal lobe)

found between parietal lobe and occipital lobe)

The cerebrum separates from the cerebellum by a deep groove

what hemispher of cerebrum usually active in speech, writing, calculation, language, comprehension, analytical thought processes and sorting out parts of things:

usually more specialized for the appreciation of spatial relationships, conceptual nonverbal ideas, simple language comprehension, general though processes and concentrating on the whole;

Governs all mental activities; 4. Organ of associative memory: 5. Seat of reason, intelligence, will and consciousness; 6. Interpreter of sensations; 7. Instigator of voluntary acts; and 8. Controlling force on reflex acts

called the 'motor lobe") is involved with two basic cerebral

concerned with the evaluation of the general senses and of taste it integrates and processes the general information that is necessary to create an awareness of the body and its relation to its external environment

the lobe located closest to the ears. It has critical functional roles in hearing, equilibrium and to a certain degree emotion and memory.

contains the visual cortex and is made up of several areas organized for vision and its associated forms of expression.

This is the deep part of the cerebrum. Connecting the midbrain with the cerebral hemispheres. It houses the third ventricle, and is composed of the thalamus and hypothalamus.

composed of two egg-shaped masses of gray matter covered by a thin layer of white mater. It is located in the center of the cranial cavity, directly beneath the cerebrum and above the hypothalamus

Functionally, this is the intermediate relay point and processing center for all sensory impulses (except the sense of smell) ascending to the cerebral cortex from the spinal cord, brainstem, cerebellum, basal ganglia and other sources.

lies directly under the thalamus. It is a small region (about the size of a lump of sugar and only 1/300 of the brain's total volume) located in the floor and part of the lateral walls of the third ventricle.

Extending from the hypothalamus is the

pituitary gland (hypophysis) which is neatly housed within the cells of what?

is responsible for changes in the heart rate and blood pressure. blushing, dryness of the mouth, clammy hands, crying, gastrointestinal discomfort, fidgeting and many other emotional expressions.

The hypothalamus produces the hormones

This is a butterfly-shaped organ located behind the pons in the posterior cranial fossa. It is the second largest part of the brain

separated from the occipital lobe of the cerebrum by a fold of dura mater called .

external parts of cerebellum

worm-like and is the midline portion

or vestibular cerebellum are the smaller lobes

cerebellar hemispheres are the larger lobes These are considered as the lateral wings and are separated by an extension of cranial dura mater called falxcerebelli

ateral wings and are separated by an extension of cranial dura mater called

the surface layer of gray matter that covers the lobes of the cerebellum

white matter tracts) is a branched arrangement of white matter beneath the gray matter.

are masses of gray matter deep within the white matter

internal parts of the cerebellum

This is an expanded continuation of the spinal cord, extending slightly forward and upward from the level of the foramen magnum to the pons. 2. The organ is the lowermost portion of the brainstem and is situated in the inferior part of the cranial cavity.

which are composed of the largest motor tracts that pass from the outer region of the cerebrum to the spinal cord.

5. On the dorsal surface of the medulla oblongata are two pairs of bumps.

uppermost portion of the brainstem and form a connecting bridge between the medulla and the midbrain. It is found in front of the fourth ventricle and the cerebellum Functionally, this functions as conduction pathway of impulses and helps control respiration

narrow segment of nervous tissue that connects the forebrain with the hindbrain. This extends from the pons to the lower portion of the diencephalon. It is, therefore, a segment of the brainstem located between the diencephalon and the pons

concerned with the orientation of the head in space

which is concerned with the position of the head in relation to the trunk and with the adjustments of the extremities and the eyes to the position of the head.

nerves of the cerebrum

are nerves of the brainstem

emerges from cervical spinal cord

conducts umpulses related to the sense of smell

the nerve of vision

the nerve of vision

is the smallest of the cranial nerves and supplies motor and sensory fibers to the superior oblique muscle of the eyeball

is the largest of the cranial nerves and the great sensory nerves of the head and the face

supplies the lateral muscle of the eyeball

supplies the lateral muscle of the eyeball

the great motor nerve of the face and is concerned with facial expression

is concerned with hearing and with equilibrium

is important in the act of swallowing

is the wandering nerve. It's name because of its extensive distribution of any cranial nerves, hence the longest of the cranial nerves. This innervates the structures in the head, neck, thoracic and abdomen

the wandering nerve. It's name because of its extensive distribution of any cranial nerves, hence the longest of the cranial nerves. This innervates the structures in the head, neck, thoracic and abdomen

supplies the sternocleidomastoid muscles and part of the trapezius muscles

innervates the muscles of the tongue

are concerned with the specialized (special) senses of smell, taste, vision, hearing and balance as well as the general sense and other sensory inputs. The nerves are also involved with the specialized motor activities of eye movement, chewing, swallowing, breathings, speaking and facial expression. The vagus nerve is an exception since the fibers are projecting to organs in the abdomen and thorax

Which of the four governs all mental activities?

Which division houses the third ventricle and composes of the thalamus and hypothalamus

Which division that plays a role in maintaining muscle tone, equilibrium and posture

Which division the pons, medulla oblongata and midbrain belong?

Which lobe is concerned with the evaluation of the general senses and of taste?

Which lobe has critical functional roles in hearing, equilibrium and to a certain degree, emotion and memory

Which of the three is the inferior-most and joins with the spinal cord At what opening, the two unite?

Which portion is found in front of the fourth ventricle and the cerebellum?

composed of two-egg masses of gray matter covered with a thin layer of white matter

forms the connecting bridge between the medulla and the midbrain.

the deep groove that separates the cerebellum from the cerebrum

the network of capillaries within the ventricles of the brain that form cerebrospinal fluid.