13.7- Function brain systems

Question 1

What are the parts of the limbic system?

Answer 1

Cingulate Gyrus
Parahypocampal Gyrus
Hippocampus
Amygdaloid Body
Olfactory bulbs, tracts, and cortex
Fornix
Nuclei of the diencephalon (anterior thalamic nuclei, habenular nuclei, septal nuclei, mammillary bodies)

Question 2

Cingulate Gyrus

Answer 2

Internal mass of the cerebral cortex located within the longitudinal fissure and superior to the corpus colossus.
Seen only in a sagittal section and it surrounds the diencephalon.
Receives input from other components of the limbic system.

Question 3

Parahypocampal Gyrus

Answer 3

Mass of cerebral cortical tissue in the temporal lobe.

Functions associated with hippocampus.

Question 4

Hippocampus

Answer 4

Component of the cerebrum located superior to the Parahypocampal gyrus.
Connects to the diencephalon via the fornix.
Nucleus shaped like a seahorse.
Essential in storing memory and forming long term memory.

Question 5

Amygdaloid body

Answer 5

Connects to the hippocampus.
Involved in fear and other emotions
Can help store and code memories based on how a person perceives them.

Question 6

Olfactory bulbs, tracts, and cortex

Answer 6

Emotion connected to smells and memories.

Question 7

Fornix

Answer 7

Thin white matter connecting the hippocampus with the limbic system structure of the diencephalon.

Question 8

Reticular formation

Answer 8

Loosely organized gray matter that projects through the midbrain, pons, and medulla.
Motor and sensory components.
Regulates muscle tone
Assistes in autonomie muscle movements like BP, HR, and Respiration.

Question 9

Reticular activation system.

Answer 9

Sensory components of the reticular formation

Awareness of sensation and voluntary control of motor activities.

Question 10

What is the highest level of consciousness?

Answer 10

Alertness- when a person is A/O X4