Parts of a Nueron
CSF Formation & Flow
Cranial Nerves
Surface Features vs Functional Areas of Cerebrum
Specific Brain Structures & Functions
100
Name features A and B
A: dendrites
B: soma
100
What is CSF?
Cerebrospinal fluid: filtered blood plasma that bathes the brain and spinal cord; provides nutrients and protection
100
What are the first three cranial nerves and their general functions?
Olfactory I (S)
Optic II (S)
Oculomotor III (M)
100
What surface feature separates the left and right hemispheres?
longitudinal fissure
100
What are the four principal regions of the brain?
Brain stem
Diencephalon
Cerebrum
Cerebellum
200
Name structure C and its function
C: axon hillock
Function: connects the cell body (soma) to the axon, sums up signals
200
What kind of cells produce CSF and where are they located?
Ependymal cells in the Choroid plexus
200
What are the general and specific functions of Trigeminal V?
General: both sensory and motor
Specific: face sensation
200
What surface feature separates the frontal and parietal lobes?
central sulcus
200
What are the functions of the cerebellum?
smooths and coordinates contractions of skeletal muscles; regulates posture and balance
300
Name structure E and its function
E: Node of Ranvier
Function: propagates electrical signal down axon; increases rate of transmission like fast tracks in Mario Kart
300
What space in the meninges does CSF flow within? Between what two membranes of the meninges is this space?
subarachnoid space between the arachnoid mater and the pia mater
300
What nerve has specific functions of heart rate and digestion?
Vagus X (B)
300
What two functional areas are on either side of the central sulcus?
primary motor cortex (anterior) and primary somatosensory cortex (posterior)
300
What principal regions holds the midbrain? Name some of the midbrain's functions.
Brain stem
vision, hearing, motor control, sleep and wakefulness, arousal (alertness), temperature regulation
400
Name structure F and its function
F: Synaptic End Bulb
Function: mediate signal for muscle contraction and/or in between neurons
400
What is the function of the arachnoid villi?
move CSF from the subarachnoid space to the superior sagittal sinus (venous circulation)
400
Which cranial nerve is K? What are its general and specific functions?
Accessory XI (M): moves head
400
What functional area helps in producing speech? What functional area helps in understanding speech?
Broca's Area: producing speech
Wernicke's Area: understanding speech
400
What are the three specific regions of the cerebrum?
Cerebral cortex (grey matter)
Cerebral white matter (found deep to the cerebral cortex)
Basal Nuclei (Ganglia)
500
Name structure D and its location. Name what surrounds this structure and its function
D: Schwann Cell
Location: PNS (peripheral nervous system)
Myelin Sheath: allows electrical impulses to transmit quickly; talks to other neurons
500
What is the flow of CSF through the ventricles? (List 5 structures in order)
Lateral ventricles x2
Interventricular foramen x2
Third ventricle
Cerebral aqueduct
Fourth ventricle
500
What cranial nerve is G? What are its general and specific functions?
Facial VII (B): moves face, salivate
500
Which functional area enables you to physically feel inside your purse? Which functional area enables you to recognize that what you feel in your purse are your keys?
primary somatosensory cortex
somatosensory association area
500
What specific region is thought to play a role in PTSD? What is the one structure in this specific region that we need to know?
Thalamus
Intermediate mass