Irene Gold Part 1 Review Book Spinal Anat Section Flashcards
(51 cards)
What is derived from endoderm?
-organs
-gut
-respiratory tract
“tubular structures”
notochord -> ____________ -> neural groove -> ___________ -> neural crest cells
neural plate, neural tube
-lamina failed to close
-tuft of hair over growth site called “fawn’s beard”
-B9/ folic acid/ methyl folate/ tetrahydrofolate would’ve prevented this
spina bifida occulta
meninges protrude out=
meningocele
spinal cord protrudes out because meninges not developed properly=
myelocele
spinal cord and meninges protrude out=
meningomyelocele
cerebellar peduncles come below foramen magnum=
arnold chiari syndrome type 1
cerebellar peduncles come below foramen magnum and meningomyelocele (usually in lumbar spine)=
arnold chiari syndrome type 2
failure of maxillary and palatine bones fuse=
cleft palate
What does prosencephalon develop into?
telencephalon and diencephalon
What does the diencephalon develop into?
thalamus, subthalamus, epithalamus (pineal gland)
What does rhombencephalon develop into?
metencephalon and myelencephalon
What does the metencephalon develop into?
pons and cerebellum
What does the myelencephalon develop into?
medulla
impulse towards cell body=
dendrites
impulse away from cell body=
axons
What is the resting membrane potential for a muscle cell?
85-90mV
What is the resting membrane potential for a neuron?
65-70mV
pacinion receptors detect
vibration
ruffini receptors detect
joint position
meissner receptors/merkels detect
acute touch
free nerve endings detect
pain, temp, crude touch
What principle is this?
-enough sodium leaks in for any portion of inner membrane to be positive= spontaneous depolarization
all or nothing principle
What part of the brain houses the respiratory and cardiac centers, autonomics, and CN 5-12?
medulla and pons