Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
25 Cards in this Set
- Front
- Back
what structures make up the CNS?
|
The Brain and the spinal cord
|
|
What is the A.N.S. a subdivision of?
|
The ANS is a subdivision of the PNS and the CNS
|
|
The the two types of cells of the nervous system, also state each ones function?
|
1) the Neuron = electrically excitable
2) Glia = supportive cell |
|
In the development of the nervous system, name the two structures the Nueral Ectoderm divide into?
|
1) Nueral Tube
2) Nueral Crest |
|
Name the 4 glial cells of the CNS and state each ones function
|
1) Astrocytes = participate in glosis and Scar Tissue
2) Oligodendrocytes = Myelinate axons in CNS 3) Ependymal Cell = Line the ventricles of the Brain and form secratory cells of the choroid plexusess. Ependymal Cells secrete C.S.F. 4)Microglia = Pagocytic cells from blood. These are the macrophages of the brain |
|
Name the two types of Glial Cells of the PNS?
|
Satellite cells = surron and support ganglion cells
Schwann Cells = Myleninate axons in PNS |
|
Explain the embryonic development during the first 26 days of development?
|
1) The ectoderm thickens along the Dorsal midline to form the Neural plate.
2) The nueral fold fuses dorsally and forms the neural tube |
|
Name the 3 primary brain vessicles
|
1) Prosencephalon = The forebrain
2) Mesencephalon = The Mid-brain 3) Rhombencephalon = The hindbrain |
|
in ____ weeks of embryonic development, secondary brain vessicles from?
|
In 5 weeks of embryonic development, secondary brain vessicles from?
|
|
What two structures arise from the prosencephalon?
|
Telencephalon and Diencephalon
|
|
What two structures arise from the Rhombencephlon ?
|
1) Metencephlon
2) Myelencephlon |
|
Of the three primary vesicles, which one is the largest and also referred to as the Cerebrum?
|
Prosencephalon
|
|
the fate of the Diencephalon is all of the following except?
a) Thalumus b) hypothalmus c) epithalmus d) Retina e) Optic Nerve f) sensory portion of eyes g) cerebellum |
g) cerebellum is NOT correct
|
|
Metencephalon develops into what two adult brain structures?
|
Pons and the Cerebellum
|
|
The brain stem, which is developed from the _______ and ________, consists of what 3 structures?
|
The brain stem, which is developed from the Mesencephalon and Rhombocephalon, consists of what 3 structures?
a) Mesencephalon b) Pons c) medulla Oblongata |
|
Name the secondary brain vessicles and the primary vessicles that each one is derived from ?
|
Telencephalon from Prosencephalon
Diencephalon from the Prosencephelon Mesencephalon stays steady Metencephalon from the rhombencephalon Myelencephalon from the Rhombencephalon |
|
What adult brain structures arise from the telencfephalon?
|
Cerebrum and Cerebral hemisphere (cortex, white matter and basal Nuclei)
|
|
Name the 3 germ layers and what structures/systems evolve from them?
|
Ectoderm = Skin, CNS and vast part of the PNS
Mesoderm = Muscles, Connective tissue and Bone Endoderm - Cavity of the gut |
|
The ______ end of the neural tube expands in three places with constrictions between them to from the 3 primary brain vessicles
|
The ANTERIOR end of the neural tube expands in three places with constrictions between them to from the 3 primary brain vessicles
|
|
Which of the following does the Neural crest form from?
A) CNS B)PNS C) spinal COrd D) NONE of the ABOVE E) All of the above |
C) Spinal Cord
|
|
The Medulla Oblongata is formed by which secondary brain vessicle
|
Myelencephalon
|
|
The Rhombencephalon will form into two parts what are they?
|
1) Metencephalon
2) Myelencephalon |
|
The cavity of the mesencephalon form what cavity?
|
Cerebral aquaduct
|
|
The cavity of Rhomencephalon form which ventricle?
|
Fourth Ventricle
|
|
The brain stem consists of what adult brain structures?
|
Midbrain, Pons and Medulla Oblongata
|