Objectives:
Describe the microanatomy of tissues in the joints and explain how their structure reflects their function.
Define the three classes of joints and explain how their structure reflects their function.
Hyaline cartilage is the same as articular cartilage.
Fibrocartilage is what the epiphyseal plate is made from.
Fibrocartilage has a different histological structure from hyaline cartilage.
Questão 4
Questão
Choose the correct statements about cartilage histology.
Responda
The chondrocytes live in lacunae.
Cartilage is composed mainly of collagen fibres.
Cartilage is white due to fatty acids.
Cartilage acquires nutrients via diffusion as it is not vascular.
Questão 5
Questão
Diffusion of nutrients into cartilage is achieved via 'loading', regular joint movement/activity
Responda
True
False
Questão 6
Questão
Hyaline cartilage is [blank_start]amorphous[blank_end], with [blank_start]little[blank_end] collagen content, and a [blank_start]high[blank_end] water content, that resists [blank_start]compression.[blank_end]
Fibrocartilage has [blank_start]many[blank_end] bundles of collagen, and resists [blank_start]tension.[blank_end] The orientation of these fibres are aligned in the direction of stress and so it also resists [blank_start]compression[blank_end], making it specialised.
Responda
amorphous
little
high
compression.
many
sparse
tension.
compression
tension
Questão 7
Questão
Lack of bony congruence is made up for by hyaline cartilage moulding to the articulations of synovial joints.
Responda
True
False
Questão 8
Questão
Hyaline cartilage remodels.
Responda
True
False
Questão 9
Questão
The more bony congruence there is, the more soft tissue support is needed.
Responda
True
False
Questão 10
Questão
The menisci are convexly shaped and diffuse forces through the bones of the knee.
Responda
True
False
Questão 11
Questão
Choose the incorrect statement.
Responda
Intervertebral discs are made of fibrocartilage.
The nucleus pulposus is a gel like structure which resists compression, and is distributed over the top of the intervertebral disc.
"Slipping a disk" is a tear in the fibrocartilage of the intervertebral disc where the nucleus pulposus has been removed from the proper position.
Questão 12
Questão
Choose the correct statements about ligaments and tendons.
Responda
They are composed of DFCT.
They have low collagen content.
They are slightly vascularised.
They are maintained by fibroblasts.
Ligaments join muscle to bone at an insertion, facilitating movement.
Tendons join bone to bone, restricting unwanted movement.
Questão 13
Questão
A lateral ligament will restrict adduction.
Responda
True
False
Questão 14
Questão
When a tendon is pulled out it usually takes a section of bone with it.
Responda
True
False
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