Anatomy Lecture 5: Joints (1) (1) PDF

General Anatomy BMS114  Joints Definition: The areas where 2 or more bones meet (articulate).  Classification of joints: According to tissue between articulating bones Fibrous Cartilaginous Synovial ...

General Anatomy BMS114  Joints Definition: The areas where 2 or more bones meet (articulate).  Classification of joints: According to tissue between articulating bones Fibrous Cartilaginous Synovial  1.Fibrous Definition: ❖Articulating bones connected by fibrous tissue. ❖ Not mobile. Types: 1.Suture 2.GOMPHOSIS  1. Suture Between skull Ossify with bones age  2.GOMPHOSIS Root of teeth is fixed in a socket by a fibrous membrane  2. Cartilaginous Definition: ❖ BONES UNITED BY CARTILAGE. ❖ No or limited movement. Types: 1. Primary cartilaginous 2.Secondary cartilaginous  Primary cartilaginous Not Ossify mobile with age ❖Epiphyseal plate:  2.Secondary cartilaginous Limited Never ossify movement ❖Intervertebral disc  3.Synovial joint Definition: ❖Bones united by space containing synovial fluid. Characters: ❖ Freely mobile. ❖ Articular surface of the two bones covered with hyaline cartilage. ❖ Two bone separated by joint cavity filled with synovial fluid which (lubricate, allow free movement and provides nutrition). ❖Two bones surrounded by fibrous capsule. ❖There are localized thickened bands in the fibrous capsule called Capsular ligaments. ❖This Fibrous capsule lined by synovial membrane.  Classification of synovial joints Synovial Synovial Synovial plane Hinge Pivot Synovial Synovial Synovial ball Ellipsoid saddle and socket  Synovial Plane ❖E.g.: Intercarpal joint Synovial Hinge ❖E.g.: Elbow joint  Synovial Pivot ❖E.g.: Radioulnar joint Synovial Ellipsoid ❖ Oval convexity received in elliptical concavity ❖ E.g.: wrist joint.  Synovial Saddle ❖E.g.: carpo-metacarpal joint of thumb  Synovial (Ball and Socket) ❖ Rounded head (ball shaped) received in cup shaped (socket) ❖ Allow Flexion & extension -----adduction & abduction…Rotation ❖ E.g.: Shoulder joint and Hip joints Quiz A B C  CHOOSE THE CORRECT ANSWER: 1- Which one of the following joints belong to the fibrous joints? a. Suture. b. Intervertebral disc. c. Epiphyseal plate. d. Hinge joint. 2- What is the joint type of the Intervertebral disc ? 1) 1ry cartilaginous joint 2) 2ry cartilaginous joint. 3) Fibrous joint. 4) Synovial joint.. 3- What is the type of Shoulder joint? a) Fibrous joint b) Synovial Hinge c) Synovial Ellipsoid d) Synovial ball and socket Q: Which of the following is an example of a synovial hinge joint A. Wrist B. Shoulder C. Ankle D. Knee