muscoskeletal system Flashcards
epaxial muscles extend the spine and hypaxial muscles flex the spine. True of false
true
which differentiation of mesoderm surrounds the neural tube and notochord?
schlerotome
articulation of the spinal cord is made possible by two structures:
intervetebral discs and neural arch
the notochord is most degenerated in the spinal cord, but retains in the:
nucleus pulposus
The tissue surrouding the nucleus pulposus is called:
annulus fibrosus
What structure in the spinal cord herniates slipped disc?
nucleus pulposus
Each vertebrae is a component of one somite. true of false?
false. two somites
The myotome splits into two parts:
epimere and hypomere
The epimere forms the epaxial muscles. The hypomere forms:
hypaxial muscles and limb muscles
The epaxial muscles are supplied by the ventral rami of spinal nerve. true of false?
false. it is supplied by the dorsal rami.
human segmentation is most obvious in the:
somites and nephrons etc
The muscle blocks are innervated by the segmentally arranged spinal nerves. True or false
true
The segmental (somite based) development
of the skin dermis leaves a segmental
innervation pattern to the skin in the form of:
dermatomes
vertebral numbers increase in snakes and in frogs they:
decrease in numbers
All mammals have 7 vertebrae in the neck. True of false
true
