Chapter 14

3 classes

Cranial nerves are numbered from to based on their position in the brain.

I to XII

The function of cranial nerve one is related to __, which falls under the category of __ sensory.

smell; special

Cranial nerves send sensory and motor commands to __ side of the body as the side of the brain they originate from.

opposite

The __ is the connecting structure between the two cerebral hemispheres.

corpus callosum

The outer layer of the cerebral hemispheres is known as the __.

cerebral cortex

The is the primary area for processing visual information, while the processes auditory information.

occipital lobe; temporal lobe

The __ cortex in the parietal lobe is responsible for perceiving somatic sensations.

primary somatosensory

Basal nuclei are embedded in matter, while the cerebral cortex is made up of matter.

white; gray

The waves are characteristic of a normal resting adult, while waves are seen in awake, alert individuals.

alpha; beta

During a stroke, symptoms may present on the side of the body if the side of the brain is affected.

left; right

The __ gyrus contains the primary motor cortex responsible for voluntary skeletal movements.

precentral

Cranial nerves can have __ functions such as motor, sensory, or both, unlike spinal nerves which operate the same way.

multiple

The __ sulcus separates the frontal lobe from the parietal lobe in the brain.

central

The area interprets sensory input to allow understanding of various stimuli, while the area helps in articulating speech.

Wernicke's; Broca's

The largest part of the brain is called the __.

Cerebrum

The small part of the brain that coordinates fine movements is called the __.

Cerebellum

The folds of the brain are called __.

Gyri

The grooves of the brain are called __.

Sulci.

The outer region of the cerebrum is known as the __.

Cerebral cortex.

The __ separates the two cerebral hemispheres.

Longitudinal fissure.

The three parts of the brain stem in order from the spinal cord are __, __, and __.

Medulla oblongata, Pons, Midbrain.

Another term for the midbrain is __.

Mesencephalon.

The two parts that make up the diencephalon are and .

Thalamus and Hypothalamus.

The thalamus acts as the __ for ascending sensory information before it reaches the cerebral cortex.

Final relay station.

The act of axons crossing over is called and the area where they cross is known as .

Decussation; Commissure.

The gial cell that produces cerebrospinal fluid (CSF) is called __.

Ependymal cell.

The three layers of meninges in order from outermost to innermost are __, __, and __.

Dura, Arachnoid, Pia.

The blood-brain barrier is maintained by a network of __.

Astrocytes.

The hormone released by the pineal gland that helps regulate sleep is called __.

Melatonin.

The __ is the largest part of the brain.

cerebrum

The second largest part of the brain is the __.

cerebellum

The __ producer of cerebrospinal fluid (CSF) is an ependymal cell.

choroid plexus

The three regions of the brainstem are the medulla, pons, and __.

midbrain

A group of cell bodies in the CNS is termed a __.

nucleus

A group of cell bodies in the PNS is termed a __.

ganglion

The __ is the final relay station for ascending sensory information before it reaches the cerebral cortex.

thalamus

The blood-brain barrier is maintained by __ cells.

astrocyte

The __ separates the right and left cerebral hemispheres.

longitudinal fissure

Cerebrospinal fluid circulates through the __ in the spinal cord.

central canal

The __ regulates hormone release and autonomic functions such as heart rate and body temperature.

hypothalamus

A __ is a deeper groove in the brain surface, while a sulcus is a shallower groove.

fissure

The __ connects the hypothalamus to the pituitary gland.

infundibulum

The __ produces myelin in the CNS.

oligodendrocyte

The process by which sensory information is sorted by the thalamus is similar to how a __ sorts mail.

post office

The outer layer of the brain's surface is known as the __ cortex.

cerebral

The __ ventricle is located in the middle of the brain and connects to the fourth ventricle via the cerebral aqueduct.

third