L8 Structures Involved in Joints

Beschreibung

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.
Mer Scott
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Mer Scott
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1

Zusammenfassung der Ressource

Frage 1

Frage
What is an articulation?
Antworten
  • Where two bones meet at a joint.
  • A pivot point.
  • Cartilaginous ends moving against each other.

Frage 2

Frage
Soft tissue in joints has no organic component.
Antworten
  • True
  • False

Frage 3

Frage
Choose the FALSE statement about cartilage.
Antworten
  • Cartilage is soft tissue.
  • 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.

Frage 4

Frage
Choose the correct statements about cartilage histology.
Antworten
  • 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.

Frage 5

Frage
Diffusion of nutrients into cartilage is achieved via 'loading', regular joint movement/activity
Antworten
  • True
  • False

Frage 6

Frage
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.
Antworten
  • amorphous
  • little
  • high
  • compression.
  • many
  • sparse
  • tension.
  • compression
  • tension

Frage 7

Frage
Lack of bony congruence is made up for by hyaline cartilage moulding to the articulations of synovial joints.
Antworten
  • True
  • False

Frage 8

Frage
Hyaline cartilage remodels.
Antworten
  • True
  • False

Frage 9

Frage
The more bony congruence there is, the more soft tissue support is needed.
Antworten
  • True
  • False

Frage 10

Frage
The menisci are convexly shaped and diffuse forces through the bones of the knee.
Antworten
  • True
  • False

Frage 11

Frage
Choose the incorrect statement.
Antworten
  • 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.

Frage 12

Frage
Choose the correct statements about ligaments and tendons.
Antworten
  • 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.

Frage 13

Frage
A lateral ligament will restrict adduction.
Antworten
  • True
  • False

Frage 14

Frage
When a tendon is pulled out it usually takes a section of bone with it.
Antworten
  • True
  • False
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