CNS Appendix B
Card Set Information
CNS Appendix B
Brain Lobes Mesencephalon diencephalon telencephalon rhombencephalon
Name the components of the brain stem from inferior to superior.
Medulla Oblongata, Pons, Midbrain
The M.O. is stem-like. True or False?
What part of the brain stem has many cranial nerve pairs near or extending from it?
What are the bumps called on the M.O. from medial to lateral?
Pyramids and Olives
Vital Functions of the M.O?
Breathing and cardiovascular control
What part of the brain stem contains all spinal cord neuron fibers?
The Pons is found between what two structures?
M.O. and Midbrain
What cranial nerve pair can be found on the lateral surface of the Pons?
Trigeminal Nerve. #V
What two structures form the floor of the 4th ventricle?
Pons and M.O.
Vital Functions of the Pons?
Bridge for integration and relay between cerebrum and cerebellum
Also known as the midbrain.
This structure surround the cerebral aqueduct.
What runs through the midbrain?
What makes up the tectum and is posterior to the cerebral aqueduct?
2 superior and 2 inferior colliculi, known as the corpora quadrigemina
The cerebral peduncles are ventral to what?
What is the Crus made of?
Red and black nuclei
What does the Midbrain do?
Coordinates subtle reflexes with the head in seeing and hearing.
What do the Cerebral Peduncles consist of?
Many descending motor neurons
What makes up the Diencephalon?
Thalamus, Hypothalamus, Massa Intermedia, 3rd Ventricle, Mamillary Bodies, Pineal Body
What is the Diencephalon and what does it do?
Neuron relay center that controls many autonomic and endocrine functions.
The Telencephalon is broken into ______, which are divided by the _______.
Hemispheres, Longitudinal Cerebral Fissure.
Name the 4 major lobes of each hemisphere.
Frontal, Parietal, Occipital, Temporal
Name the Pseudo Lobes.
Insular, Limbic, Pyriform
Gyri are formed by ______.
Sulci and Fissures
What makes up the outer thin cortex of each hemisphere?
The inner mass of a hemisphere is made of?
White matter with gray masses of basal ganglia.
The largest lobes.
Frontal lobes (35% of cerebrum)
Name the Gyri of the Frontal Lobe.
Precentral Gyrus, Superior/Middle/Inferior Frontal Gyri.
Name the marker that divides the frontal and parietal lobes.
Central Sulcus (of Rolando)
This structure separates the frontal and temporal lobes.
Cerebral Sulcus (Sylvian Sulcus)
A medial view of the Frontal Lobes shows what gyrus?
Neuron axons make up this part of the brain and connect the right and left hemispheres.
What is the function of the Frontal Lobes?
"Thought elaborating" and initiates voluntary movement
This lobe is between all other lobes.
Name the gyri of the Parietal Lobes.
Post Central Gyrus, Superior & Inferior parietal lobules (supramarginal and angular gyri)
The dividing line between the Parietal Lobes and the Temporal Lobes is ______.
This sulcus of the Parietal Lobe is best seen medially.
What are the functions of the Parietal Lobe?
One "feels" modalities such as:
deep touch (pressure)
This lobe associates input from other lobes to develop skills like reading and writing.
This lobe has indistinct lateral and inferior boundaries.
The Calcarine Sulcus is visible medially on this lobe?
The Cuneus Gyrus and Lingual Gyrus are part of what lobe?
What is the Occipital Lobe's function?
Sight and memory of past sight (is received, built up, stored and associated in the Occipital Lobes)
Other lobes depend on this lobes info transfer for proper function.
The Temporal Lobes are subdivided by these gyri.
Superior, Middle, Inferior Temporal Gyri
The Superior Temporal Sulcus divides these gyri.
Superior and Middle Gyri of the Temporal Lobes.
The medial view of this lobe is complex.
Where can you find parts of a network of fibers and cell bodies in the Temporal Lobe?
Hippocampal Formation (Parahippocampus)
What are the functions of the Temporal Lobes?
Auditory reception, interpretation and memory centers.
Where are our behavioral control mechanisms controlled?
The medially located Hippocampal Formation of the Temporal Lobes
The Uncus is known for what function?
Significant olfactory interpretation area
This is a "bud" off the posterior brain stem.
The rhombencephalon in an embryo makes up what adult brain structures?
Cerebellum, M.O. and Pons
This landmark separates the Cerebellum from the Cerebrum.
What is located between the Cerebellum, Pons and MO?
What is the Tentorium Cerebelli and where is it located?
A membrane inside the Horizontal Cerebral Fissure
This landmark divides the Cerebellum into superior and inferior parts.
What is the function of the Cerebellum?
Maintain muscle tone
Ensure voluntary movements are effective
Does NOT initiate gross movements but makes them smooth.