Chapter 15: Part I (Brain) Flashcards
What are the major regions of the brain?
- Cerebrum
- Diencephalon
- Brainstem
- Cerebellum
____________ the are folds on the brain
Gyri
__________ are the depressions on the brain
Sulci
_________ & ________ are the key to brain power
Gyri & Sulci
What is gray matter?
Its unmyelinated axons, cell bodies
What is white matter?
Myelinated axons
___________ are the wrappings around the brain & central nervous system & protect the brain
Meninges
What are the 3 layers of the meninges?
- Pia mater
- Arachnoid mater
- Dura mater
___________ is innermost mater of the meningies
Pia mater
___________is the outermost mater of the meninges
Dura mater
__________ if the toughest out of the all the layer in the meninges
Dura mater
What are the large spaces in the dura mater called?
Dural venus sinuses
___________ is the middle layer mater
Arachnoid mater
The arachnoid mater contains ____________
trabeculae
_________ are neural tubes within the brain
Cavities
What are the 4 types of brain ventricles?
- Lateral ventricles
- Third ventricle
- Cerebral aqueduct
- Fourth ventricle
The third ventricle contains __________
Diencephalon
The fourth ventricle contains _____________
Pon & the cerebellum
Ventricles are filled with ______________
Cerebrospinal fluid
What is the functions of the cerebrospinal fluid?
- Reduces the weight of the brain (buoyancy)
- Physical cushioning
- Nutrients & wastes
- Environment
The cerebrospinal fluid is produced inside ___________ which are also inside ventricles
Choroid plexus
Choroid plexus is made up of _________ & ____________
Capillaries & ependymal cells
Cerebrospinal fluid is able to circulate inside the brain due to ______________-
Arachnoid granulations
What are the 3 small pathways used to circulate the cerebrospinal fluid?
- Median aperture
- two Lateral aperture
_____________ is the conduction when cerebrospinal fluid can’t circulate inside the brain
Hydrocephalus (causes fetus heads to expand)
_____________ is used for most of the complex functions of the brain such as conscious motor & sensory processing
Cerebrum
The cerebrum is divided into left & right hemispheres that are divided by the __________
Longitudinal fissure
The outer layer of the cerebral cortex is made up of ____________
Gray matter
The cerebral cortex is divdived into lobes & what are those lobes?
- Frontal lobe
- Parietal lobe
- Occipital lobe
- Temporal lobe
- Insula
The brain has some localized function where you can point at a part of the brain know know what that part does & also has diffuses functions such as what?
Memory & language
___________ is used in decision-making, our personality & voluntary motor (such are primary motor cortex)
Frontal lobe
The parietal lobe contains _______________
postcentral gyrus
Our postcentral gyrus contains what?
- Somatosensory cortex
- Conscious senses
- Sensory homunculus
_________ lobe contains the auditory association area (where sound memory) & contains our primary olfactory cortex (used for smell)
Temporal lobe
_________ contains primary gustatory cortex (which is responsible for taste) & also the emotional responses/ empathy
Insula
___________ lobe contains primary visual cortex & visual association area
Occipital lobe
Deep in the cerebral cortex & in the white matter got _________ which contain the pineal gland
Diencephalon
What does the pineal gland do?
It contains melatonin & controls circadian rhythms
__________ is used as a filter of sensory information & only sends some information to the somatosensory cortex
Thalamus
Wher e is the hypothalamus located?
Between the thalamus & pituitary
What are the different functions of the hypothalamus?
- Body temp regulation
- Emotional behavior control
- Food & water intake regulation
- Circadian rhythms
-Autonomic & endocrine system master control
___________ is a stem inferior to the Diencephalon & contains the cerebral peduncles
Midbrain
The cerebral peduncles are _________
Motor tracts
_________ is involved in visual & auditory processing
Tectum
What are the types of colliculi that are in the tectum & involved in visual & auditory processing?
- Superior colliculi
- Inferior colliculi
Super colliculi is involved in visual reflex & tracks __________
Moving objects
Inferior colliculi is involved in auditory reflex & tracks _____________
tracks sound
_________ are the bulging region anterior on the brainstem
Pons
What are the functions of the Pons?
Controls parts of skeletal muscle breathing control
Pons connect to what region on the brain?
Cerebellum
Pons contains which cranial nerves?
5, 6, 7, & 8
________- is posterior to the brainstem
Cerebellum
What are the functions of the Cerebellum?
Involved in fine motor control such as motor coordination & balance
___________ is the inferior portion of the brainstem
Medulla oblongata
Alot of the medulla oblongata is made up of __________ which are tract from the spinal cord to the rest of the brain
White matter
The gray matter in the medulla is important for what?
Autonomic vital functions such as respirations, heart rate/strength
& blood pressure
Medulla oblongata is the source for which cranial nerves?
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