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Joints
Topographic Anatomy & Joints
Question | Answer |
---|---|
What are Fibrous Joints? | They have no joint cavity, united by various fibrous & connective tissues or ligaments, and are the strongest joints in the body because they are virtually immovable. |
What are the 3 types of Fibrous Joints? | 1. Syndesmosis 2. Suture 3. Gomphosis |
What is Syndesmosis joint? | Immovable or slightly movable joint united by sheets of fibrous tissue. |
What is an example of a Syndesmosis Joint? | Distal Tibiofibular joint. |
What is a Suture Joint? | Immovable joint occurring only in the skull. |
What is an example of a Suture Joint? | Sutures in the skull. |
What is a Gomphosis Joint? | Immovable joint occuring only in roots of the teeth. |
What is an example of Gomphosis Joint? | A conical process is inserted into a socket. |
What are Cartilaginous Joints? | They have no joint cavity, are virtually immovable, hyaline cartilage or fibrocartilage unite these joints. |
What are the 2 types of Cartilaginous Joints? | 1. Symphysis 2. Synchondrosis |
What are Symphysis Joints? | Slightly movable bones are separated by a pad of fibrocartilage- designed for strength and shock absorbency. |
What is an example of a Symphysis Joint? | Pubic Symohysis & Vertebrae Joints. |
What are Synchondrosis Joint? | Immovable-rigid cartilage unite the bones. |
What is an example of a Synchondrosis Joint? | Epiphyseal plate of long bones. |
What are Synovial Joints? | Permit wide range of motion and are all freely movable, some of these joints contain a pad of fibrocartilage called meniscus (which act as shock absorbers)and some contain bursae (fluid filled sacs the help rduce friction). |
What are the 6 types of Synovial Joints? | Gliding, hinge, pivot, ellipsoid, saddle, and ball and socket. |
What is a Gliding Joint? | Permits a gliding movement only- articular surfaces are flat(or slightly concave)and the other is convex. |
What are some examples of a Gliding Joint? | Intercarpal(wrist) and intertarsal(foot) joints. |
What is a Hinge Joint? | Permits only flexion/extension- similar to a door hinge. |
What are some examples of a Hinge Joint? | Elbow, knee, and ankle. |
What is a Pivot Joint? | Allows for rotation around a single axis- a rounded surface of one bone articulates with a ring of another bone. |
What are some examples of a Pivot Joint? | Atlas(C1) and Axis(C2) of the C-spine. |
What is an Ellipsoid Joint? | Permits movement in two directions at right angles to each other. |
What is an example of a Ellipsoid Joint? | Radiocarpal joint of wrist. |
What is a Saddle Joint? | Named because the articular surface of one bone is saddle shaped and the surface of the other is shaped like a rider sitting in a saddle- only one saddle joint in the body. |
What is an example of Saddle Joint? | 1st carpometacarpal joint of the hand. |
What is a Ball and Socket Joint? | Ball shaped head fits into a concave socket- provides wide range of motion. |
What are some examples of a Ball and Socket Joint? | Hip and shoulder. |
What are the 4 Body Habitus and percent? | Sthenic- 50% Asthenic- 10% Hyposthenic- 35% Hypersthenic- 5% |
What are the organ placements in Sthenic? | Heart: moderately transverse Lungs: moderately length Diaphragm: moderately high Stomach: high, upper left Colon:spread evenly, slight dip in transverse colon Gallbladder: centered on right side, upper abdomen |
What are the characteristics in Sthenic? | Build: moderately heavy Abdomen: moderately long Thorax: moderately short,broad, and deep Pelvis: relatively small |
What are the organ placements in Asthenic? | Heart: nearly vertical and at the midline Lungs: long, apices above clavicles, may be broader above base Diaphragm: low Stomach: low and medial, in the pelvis when standing Colon: low, folds on itself Gallbladder: low and nearer the midline |
What are the characteristics in Asthenic? | Build: frail Abdomen: short Thorax: long, shallow Pelvis: wide |
What are the organ placements in Hypersthenic? | Heart: axis nearly transverse Lungs: short, apices at or near clavicles Diaphragm: high Stomach: high, transverse, and in the middle Colon: around periphery of abdomen Gallbladder: high, outside, lies more parallel |
What are the characteristics in Hypersthenic? | Build: massive Abdomen: long Thorax: short, broad, deep Pelvis: narrow |
C1 | Mastoid Tip |
C2, C3 | Gonion |
C3, C4 | Hyoid Bone |
C5 | Thyroid Cartilage |
C7, T1 | Vertebra Prominens |
T1 | Approximately 2 inches above Jugular Notch |
T2, T3 | Jugular Notch |
T4, T5 | Sternal Angle |
T7 | Inferior Angles of Scapulae |
T9, T10 | Xiphoid Process |
L2, L3 | Inferior Costal Margin |
L4, L5 | Superior Aspect of Iliac Crest |
S1, S2 | Anterior Superior Iliac Spine (ASIS) |
Coccyx | Pubic Symphysis and Greater Trochanters |