Peripheral NS Development

Question 1

What type of cells does the neural crest give rise to?

Answer 1

Neurons
Glia
Chondrocytes
Pigment cels
Chromaffin cells
Smooth muscle

Question 2

Neural crest cells originate from…

Answer 2

The neuroectoderm of the forebrain, midbrain, and hindbrain

Question 3

Where do neural crest cells migrate to?

Answer 3

They migrate ventrally into the pharyngeal arches and rostrally around the forebrain and optic cup (future eye)

Question 4

What structures do the neural crest cells form?

Answer 4

Midfacial and pharyngral arch
Skeletal structures
Cartilage
Bone
Tendon
Dentin
Dermis
Pia
Arachnoid
Sensory neurons
Glandular stroma

Question 5

What do the cranial NCCs give rise to that the trunk ones do not?

Answer 5

Cartilage and bone

Question 6

Ectodermal placodes

Answer 6

Specialized regions of ectoderm in the head and neck

Question 7

What does the
1. lateral motor column
2. medial motor column
innervate?

Answer 7

1. Limbs

2. Axial muscles

Question 8

2 major functional divisions of the nervous system

Answer 8

Somatic NS

Visceral NS

Question 9

Somatic NS

Answer 9

Innervates the skin and most skeletal muscles (both sensory and motor components)

Question 10

Visceral NS

Answer 10

Innervates the viscera and the smooth muscle and glands in the more peripheral part of the body
Also called the autonomic NS
2 components: sympathetic and parasympathetic division