30 Questions
Which bone is located in the upper arm?
Humerus
How many carpal bones are in the human wrist?
8
Which two bones are located in the forearm?
Radius and Ulna
How many phalanges are in the human hand?
14
Which bone connects the arm to the body at the shoulder?
Clavicle
What type of bone is the scapula?
Flat bone
Which joint connects the scapula with the clavicle?
Acromio-clavicular Joint
Which joint involves the articulation between the scapula and the humerus?
Gleno-humeral Joint
Where does the scapula articulate with the posterior wall?
Scapulo-Thoracic Joint
Which of the following is NOT an articulation point for the scapula?
Sternum
Which part of the humerus articulates with the scapula?
Head
Which structure is found on the anterior view of the humerus?
Deltoid Tuberosity
What is the role of the head of the humerus?
Articulates with the scapula
Which feature is not found on the posterior view of the humerus?
Coronoid Fossa
What does the lower end of the humerus form when articulated with the radius and ulna?
Elbow joint
How many carpal bones are in the hand?
8
The thumb has how many phalanges?
2
Each finger (excluding the thumb) is composed of how many phalanges?
3
How many bones are there in the metacarpals?
5
How many total phalanges are there in the hand?
14
Where is the upper limb associated?
Lateral aspect of the lower neck and thoracic wall
What suspends the upper limb from the trunk?
Muscles and the sterno clavicular joint
What does SCJ stand for in the context of the upper limb?
Sterno clavicular joint
Which joint helps suspend the upper limb from the trunk?
Sterno clavicular joint
In addition to the SCJ, what else suspends the upper limb from the trunk?
Muscles
Which muscle is a part of the rotator cuff?
Subscapularis
Which of the following muscles is NOT part of the rotator cuff?
Teres major
What is a function of the muscles of the shoulder?
Connecting some of the bones of the upper limb to the trunk
Which muscle is responsible for initiating the abduction of the arm?
Supraspinatus
How many muscles make up the rotator cuff?
Four
Study Notes
Upper Limb
- Associated with the lateral aspect of the lower neck and the thoracic wall
- Suspended from the trunk by muscles and the sterno-clavicular joint (SCJ)
Bones of the Upper Limb
- Scapula: a flat triangular bone
- Clavicle
- Humerus: a long bone composed of head, neck, shaft, and condyles
- Radius
- Ulna
- Carpus: 8 carpal bones
- Metacarpals: 5 metacarpal bones
- Phalanges: 14 phalanges
The Scapula
- Articulates with the clavicle (ACJ)
- Articulates with the humerus (Gleno-humeral Joint)
- Articulates with the posterior wall of the thorax (Scapulo-Thoracic Joint)
The Humerus
- Upper end articulates with the scapula (Gleno-humeral Joint)
- Lower end articulates with the radius and ulna (elbow joint)
- Composed of head, neck, shaft, and condyles
Anatomical Features of the Humerus
Anterior View
- Greater Tubercle
- Lesser Tubercle
- Head of Humerus
- Anatomical Neck
- Intertubercular Sulcus
- Radial Groove
- Deltoid Tuberosity
Posterior View
- Humerus
- Medial Epicondyle
- Trochea
- Radial Fossa
- Coronoid Fossa
- Capitulum
The Hand
- Composed of carpal bones (8), metacarpals (5), and phalanges (14)
- Each finger has 3 phalanges: proximal, intermediate, and distal
- The thumb has only 2 phalanges: proximal and distal
Muscles of the Shoulder
- Connect bones of the upper limb to the trunk
Rotator Cuff Muscles
- Subscapularis
- Supraspinatus
- Infraspinatus
- Teres minor
This quiz covers the basics of upper limb anatomy, including its association with the lower neck and thoracic wall, and its suspension from the trunk.
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