The Skeletal System (Appendicular) Pt. 1 Flashcards
What is another name for the collarbone?
Clavicle
What describes the clavicle (collarbone)? (2)
- Slender
- Doubly curved bone
What two things does the clavicle attach to and how does it attach to both of them? (2)
- Attaches to the manubrium of the sternum medially
- And to the scapula laterally
What does the clavicle help to form?
Helps to form the shoulder joint
What are the scapulae (plural) or scapula (singular)?
Shoulder blades
What shape are the scapulae and what are they commonly called? (2)
- Triangular
- Commonly called “wings”
What do the scapulae do when the arms are moved in what certain way? (2)
- They flare
- When arms are moved posteriorly
What does each scapula have regarding the body and two of what? (2)
- Has a flattened body
- Two important processes
What is the acromion?
The enlarged end of the spine of the scapula
What does the acromion connect with and how to form what joint? (2)
- Connects with the clavicle laterally
- To form the acromioclavicular joint
What does the coracoid process point over?
Points over the top of the shoulder
What does the coracoid process anchor of the arm?
Anchors some of the muscles of the arm
What is the glenoid cavity and what does it receive?
A shallow socket that receives the head of the arm bone
What does the shoulder girdle have that is exceptional? What can easily be done to it? (2)
- The shoulder girdle has exceptional flexibility
- Because of this, it can easily be dislocated
What are the greater and lesser tubercles? What are they opposite of?
Two bony projections opposite the head
What are the greater and lesser tubercles sites of?
Sites of muscle attachment
What is the radius?
The lateral bone
What side is the radius on in terms of the forearm?
On the thumb side of the forearm
What is the ulna?
The medial bone
What side is the ulna on in terms of the forearm?
On the little finger side of the forearm
How many carpal bones are there?
Eight
How many metacarpal bones are there?
Five
How many bones of the phalanges are there?
Fourteen
What two things form the pelvic girdle? What other name do they have? (2)
- Two coxal bones
- Also called ossa coxae
