exam 2: Nervous system lumbosacral plexus Flashcards
As the clinical signs of spinal cord disease are characteristic for each of these regions, animals are considered to have a _________________
region-specific localization
section of spine that consist of C1–5 (neck) is referred to as
cervical
section of spine that consist of C6–T2: thoracic limbs is referred to as
Cervical intumescence
section of spine that consist of T3–L3: trunk is referred to as
Thoracolumbar
section of spine that consist of L4–S3: pelvic limbs and pelvic viscera is referred to as
Lumbosacral intumescence
section of spine that consist of Cd1–5: tail is referred to as
Caudal segments
Thoracic spinal nerves
(T3–T12 segments): Dorsal branches
motor, sensory or both
both
Thoracic spinal nerves
(T3–T12 segments):
what is the motor portion of the dorsal branch? what muscles does it go to?
medial branch
motor for epaxial
sensory for dorsum
Thoracic spinal nerves
(T3–T12 segments):
the dorsal branch splits into the medial branch and ________ branch
lateral branch (cutaneous sensory)
Thoracic spinal nerves: Ventral branch also known as ____________
intercostal nerve
Thoracic spinal nerves
(T3–T12 segments):
Ventral branches = intercostal nerves
these are thoracic spinal nerves 1- ___
12
Thoracic spinal nerves
(T3–T12 segments):
ventral branches-motor portion goes to which muscle
both
motor= external & internal
intercostal mm., transversus thoracis m., and rectus abdominis m
ventral branches-sensory split into what 2 branches
Lateral cutaneous and Ventral cutaneous branch
what is A pointing to? B?
A: Lateral Cutaneous br. from dorsal brs. of thoracic spinal nerves
B: Lateral Cutaneous br. from ventral brs. of thoracic spinal nerves (intercostal nn.)
Lateral Cutaneous brs.
of IC nn. T2,T3 is commonly called
Intercostobrachial nn.
for the Intercostobrachial nn. where should you check for a reaction
tricipital area; not the muscle because the muscle is innervated by the radial nerve
what branch/nerve innervate tricipital and part of axillary regions of thoracic a limb
Lateral Cutaneous brs.
of IC nn. T2,T3. (Intercostobrachial nn.)
name the nerves starting with 1 and moving dorsally
IC n 9.
IC n 10
IC n 11
IC n 12
what is being pointed to
IC n 9
what nerve is located at T13?
is it sensory, motor or both
Costoabdominal n
BOTH
what nerve is associated with L1
sensory, motor, both
Cranial iliohypogastric n.
BOTH
what nerve is associated with L2
motor, sensory, both
Caudal iliohypogastric n
BOTH
what are the nerves that supply to the abdominal wall (3)
Costoabdominal n
Cranial iliohypogastric n.
Caudal iliohypogastric n
what nerve is associated with L4
motor, sensory, both
Lateral cutaneous femoral n. (L4)
sensory only