Chapter 12 Part 1 Flashcards
What is cephalization?
Allows brain development and concentration of neural sensory organs towards the skull
Where does most adult brains develop from?
Secondary Brain vesicles
Where does ventricles develop from?
Neural canal (takes shape of surrounding brain structures)
What is neural tube?
Embryonic precursor that developed the brain and spinal cord (CNS)
When speaking in anatomy terminology for animals, what does rostral mean?
Towards the head
When speaking anatomy terminology for animals, what does caudal mean?
Towards the end of the body/tail
Which primary brain vesicles is the (forebrain)?
Prosencephalon
Which primary brain vesicle is the (midbrain) and also stays the same?
Mesencephalon
Which primary vesicles are the (hindbrain)?
Rhombencephalon
When does the primary brain vesicles start to develop and how?
The primary brain vesicles start forming four weeks from the anterior end of the neural tube
What does cervical flexures do?
Allows the cerebral hemisphere to grow laterally and posteriorly
In week 26, the brain is fully developed.. What does this allow?
The more the brain surface expands there are 100 billion neurons developed in the brain
What is gray matter?
Short and non-myelinated
What is white matter?
Long and myelinated
What is basic pattern?
A fluid-filled cavity surrounded by a layer gray matter and enclosed by a layer of white matter
Where is the lateral ventricle located
Cerebral hemisphere
The 3rd ventricle is located where?
The diencephalon
Where is the fourth ventricle located? And connected to what?
The midbrain, dorsally connected to pons
The secondary brain vesicle: telencephalon have what kind of brain structures?
Cerebral hemisphere (cortex, basal nuclei, white matter)
The secondary brain vesicle: diencephalon has what brain structures?
Thalamus,hypothalamus,epithalamus, retina
The secondary brain vesicles: Mesencephalon has what brain structure?
Brain stem: midbrain
The secondary brain vesicles: mesencephalon and myelencephalon has what brain structures?
Brain stem:pons, cerebellum, Brainstem: medulla oblongata
