Skeletal Tissue: Histology Flashcards
These establish the segmental organization of the body, including the vertebral column, the occipital bone of the skull, involuntary musculature of the neck, body wall and limbs
Somites
Loosely organized tissue formed from the sclerotome of somites (mesoderm)
Mesenchyme
Mesenchyme is loosely organized tissue formed from this
The sclerotome of somites (mesoderm)
Vertebrae form from this
Sclerotome of the somites
Somites are derived from this
Paraxial mesoderm
During this week in development, sclerotome cells migrate around the spinal cord and notochord to merge with cells from the opposing somite on the other side of the neural tube
4th week
Sclerotomes will develop into this
Vertebrae
The ventral portion of the sclerotome surrounds the notochord forming this
Vertebral body
The dorsal part of the sclerotome flanks the neural tube and will eventually expand to form this
Vertebral arch
Which portion of the sclerotome (dorsal or ventral) will form the vertebral body?
Ventral
Surrounds the notochord
Which portion of the sclerotome (dorsal or ventral) will form the vertebral arch?
Dorsal
Flanks the neural tube
The dermomyotome contributes to these 2 parts of the body
Dermis of the skin throughout the trunk
Myotome
This contributes to the dermis of the skin throughout the trunk and forms the myotome
Dermomyotome
This gives rise to the epaxial (dorsal) and hypaxial (ventrolateral) muscles of the body wall
Myotome
Word that describes the dorsal muscles of the body mall
Epaxial
Word that describes the ventrolateral muscles of the body wall
Hypaxial
These cells migrate into the developing limbs to form the limb muscles
Myotome cells
The division between the cranial and caudal portions of each sclerotome is characterized by a line of transversely arranged cells known as the intrasegmental boundary, otherwise known as this
Von Ebner’s fissure
What is Von Ebner’s fissure?
The division between the cranial and caudal portions of each sclerotome
Avascular, connective tissue that consists of a matrix and chondrocytes
Cartilage
Is cartilage vascularized?
No
What are the three types of cartilage?
Hyaline
Elastic
Fibro-
2 components of basic cartilage
Matrix and chondrocytes
Type of cartilage that has a lubricated, glassy appearance in the living person and has three types of molecules that make up the cartilaginous matrix (collagen, proteoglycans, multi-adhesive glycoproteins)
Hyaline cartilage