Principles - Anatomy 08 - Bones, Cartilage & Joints Flashcards
(42 cards)
What are the different types of joint?
Fibrous, Cartilagenous, Synovial
What is the compromise that must be made in joints?
Stability vs Mobility
How stable are fibrous joints?
Quite stable
What are the two types of fibrous joints?
Syndesmoses and Sutures
What is the function of syndesmoses?
Join bones with fibrous sheets
Give an example of a syndesmose.
interosesseous membrane between radius and ulna
What are sutures?
Fusing between bones
Where are sutures commonly found?
Between the bones of the skull
What are fontanelles?
cavities in the skull which become fused over throughout life
What are the 3 types of fontanelles?
Anterior, posterior and lateral
Why do fontanelles exist?
Due to cephalic-pelvic disproportion, the birth canal is too narrow for the baby’s head so bones must cross over one another
How stable are cartilagenous joints?
Fairly stable
A primary cartilagenous joint is also called…
sychondroses
A secondary cartilagenous joint is also called…
sympheses
What is a syncondroses?
Hyaline cartilage that ossifies into bone
What is a sympheses?
Fibrocartilage separating bones
Where may sympheses be found?
Intervertebral discs
Give an example of a sycondrose joint slipping.
Slipped femeral epiphysis
Give an example of a symphese
Slipped intervertebral disc
What is the outer ring of a vertebral disc called?
annulus fibrous
What is the centre of a vertebral disc called?
nucleus pulposus
Why is it common for a slipped disc to compress the spinal cord?
Nucleus pulposus herniates annulus fibrous at the weakest point which is posteriorly towards the spinal cord
How many bones are joined by a synovial joint?
2 or more
The articular surfaces of a bone involved in a synovial joint are lined with…
hyaline
