Label the bony structure of the shoulder and upper limb – Labeling the bony structure of the shoulder and upper limb is a fundamental aspect of understanding human anatomy. This intricate skeletal framework provides the foundation for movement, stability, and protection in the upper body. Embark on an in-depth exploration of the bones that comprise the shoulder girdle, upper arm, forearm, and hand, gaining a comprehensive understanding of their functions and significance.
Label the bones of the shoulder girdle
The shoulder girdle is a group of bones that connect the upper limbs to the axial skeleton. It consists of the clavicle and the scapula.
The clavicle, also known as the collarbone, is a long, slender bone that extends from the sternum to the acromion process of the scapula. It helps to support the weight of the upper limb and provides a point of attachment for muscles that move the arm.
The scapula, also known as the shoulder blade, is a large, flat bone that lies on the back of the thorax. It has a number of processes and fossae that provide attachment points for muscles that move the arm and shoulder.
Clavicle
- Connects the sternum to the acromion process of the scapula
- Supports the weight of the upper limb
- Provides a point of attachment for muscles that move the arm
Scapula
- Lies on the back of the thorax
- Has a number of processes and fossae that provide attachment points for muscles that move the arm and shoulder
Label the bones of the upper arm: Label The Bony Structure Of The Shoulder And Upper Limb
The upper arm is made up of a single bone, the humerus.
The humerus is a long, cylindrical bone that extends from the shoulder joint to the elbow joint. It has a number of processes and fossae that provide attachment points for muscles that move the arm.
Humerus
- Extends from the shoulder joint to the elbow joint
- Has a number of processes and fossae that provide attachment points for muscles that move the arm
Label the bones of the forearm
The forearm is made up of two bones, the radius and the ulna.
The radius is a long, slender bone that lies on the lateral side of the forearm. It articulates with the humerus at the elbow joint and with the carpals at the wrist joint.
The ulna is a long, thicker bone that lies on the medial side of the forearm. It articulates with the humerus at the elbow joint and with the carpals at the wrist joint.
Radius
- Lies on the lateral side of the forearm
- Articulates with the humerus at the elbow joint and with the carpals at the wrist joint
Ulna
- Lies on the medial side of the forearm
- Articulates with the humerus at the elbow joint and with the carpals at the wrist joint
Label the bones of the hand
The hand is made up of 27 bones, which are divided into three groups: the carpals, the metacarpals, and the phalanges.
The carpals are eight small bones that form the wrist joint. The metacarpals are five long bones that form the palm of the hand. The phalanges are 14 long bones that form the fingers and thumbs.
Carpals, Label the bony structure of the shoulder and upper limb
- Form the wrist joint
Metacarpals
- Form the palm of the hand
Phalanges
- Form the fingers and thumbs
Clarifying Questions
What is the function of the clavicle?
The clavicle, commonly known as the collarbone, serves as a strut that connects the sternum to the scapula. It provides stability to the shoulder joint and facilitates arm movement.
What are the major bones of the upper arm?
The humerus is the sole bone that constitutes the upper arm. It articulates with the scapula at the shoulder joint and the radius and ulna at the elbow joint.
How many bones are there in the hand?
The hand comprises a total of 27 bones, including 8 carpals, 5 metacarpals, and 14 phalanges.
