the shoulder girdle consists of... scapula, clavicle, and sometimes the sternum
the shoulder girdle interacts with... the shoulder and arm to provide significant mobility of the upper extremity.
what are the three joints that make up the sternoclavicular joint, acromioclavicular joint, and scapulothoracic joint.
shoulder girdle
what type of joint is the sternoclavicular synovial and diarthrotic, allowing triaxial movement.
joint?
what type of joint is the acromioclavicular synovial and diarthrotic, allowing uniaxial movement.
joint?
The scapulothoracic joint is where the... scapula moves along the thoracic wall.
Sternoclavicular joint allows movements elevation/depression, protraction/retraction, and upward/downward rotation.
like...
Acromioclavicular joint allows movements upward/downward rotation of the scapula.
like...
- Trapezius
- Levator scapulae
what are the muscles of the shoulder girdle? - Serratus anterior
- Rhomboids
- Pectoralis minor
a large, sheet-like muscle with specific functions for each part: upper, middle, and
what is the trapezius? lower.
- located at the middle and upper back
upper trapezius Elevates, retracts, and rotates scapula upward
Lower trapezius Depresses scapula, rotates scapula upward, and retracts scapula
what are the functions of the trapezius? elevating, retracting, and rotating the scapula.
during shoulder blade squeezing what does a synergist
PP15 - PP20 - Anatomical Kinesiology
it act as?
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, 8/13/24, 3:58 AM
Located deep to the trapezius muscle, responsible for elevating and rotating the
levator scapulae
scapula downward.
- "sawtooth"
- Large muscle located deep to the scapula, involved in protraction, rotation, and
Serratus Anterior
elevation of the scapula.
- Acts as an accessory muscle of ventilation.
Smaller muscles located deep to the trapezius, responsible for elevating, retracting,
Rhomboids Major and Minor
and rotating the scapula downward.
- deep to pectoralis major
- Located on the anterior surface of the thoracic cage, responsible for protraction,
Pectoralis Minor
depression, and downward rotation of the scapula.
- Acts as an accessory muscle of inhalation.
what is the primary function of a joint? to allow movement and provide stability when necessary
movement at a joint is created by? muscles
ligaments and joint capsules function to... limit excessive movement at a joint
what are the three characteristics of a joint? weight-bearing, shock absorption, stability
A joint between bones or cartilage in the skeleton of a vertebrate; the action or manner
what is an articulation?
of jointing or interrelating
an articulation always involves at least? 2 bones
Simple joint joint that only involves two (2) bones
Compound joint joint that involves three (3) or more bones
Joints classified based on... function and structure
functional ability to allow movement; range of motion (ROM)
Structural bones articulating with each other joined by soft tissue; make-up of the joint
increased stability means decreased mobility
1. bone shape
what are the three factors of determining
2. ligaments/capsules
balance?
3. muscle size/tightness
Supporting body weight through a joint
weight-bearing
- more stable
Gomphosis joint between teeth and maxilla and mandible bones
synarthrosis joints are immovable joints
1. sutures
2. gomphosis
synarthrosis are classified in which ways
3. synchondrosis
4. synostosis
amphiarthrosis joints are slightly movable joints
amphiarthrosis joints are classified in which 1. syndesmosis
ways? 2. symphysis
diarthrosis joints are freely movable joints
diarthrosis joints are also called synovial joints
diarthrosis joints are typically found where? at the end of long bones
fibrous joints are where the soft tissue connects bones is a dense fibrous connective tissue
PP15 - PP20 - Anatomical Kinesiology
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