What is the elbow joint made up of?

The elbow joint is composed of the distal end of the humerus and the proximal ends of the radius and the ulna (see the images below).

What 3 bones make up the elbow joint?

The bones that create the elbow are:

  • Humerus: This long bone extends from the shoulder socket and joins the radius and ulna to form the elbow.
  • Radius: This forearm bone runs from the elbow to the thumb side of the wrist.
  • Ulna: This forearm bone runs from the elbow to the “pinkie” side of the wrist.

What type of bone is the elbow joint?

Elbow joint

Type Hinge joint
Bones Humerus, radius, ulna
Mnemonics CRAzy TULips (Capitulum = RAdius, Trochlea = ULna)
Ligaments Ulnar collateral ligament, radial collateral ligament, annular ligament, quadrate ligament

Which bones make up the elbow joint quizlet?

What bones form the elbow joint and what is its function? Formed by the humerus and the two bones of the forearm, the radius, and the ulna.

How many joints are in the elbow?

three joints

The elbow actually consists of three joints: the humeroulnar, humeroradial, and proximal radioulnar joints. The combination of these joints allows for elbow extension/flexion and forearm pronation/supination.

Why is it called elbow?

Few people ever wonder why their elbows are called elbows, but there is a reason. The word breaks into two parts el and bow. Inside your forearm are two bones called the radius and the ulna. The ulna is named from Latin and Latin in turn took the name ultimately from an Indo-European root el meaning “forearm.”

How does the elbow joint work?

The bones of the elbow include the humerus or the upper arm bone the ulna the larger bone of the forearm on the opposite side of the thumb. And the radius. The smaller bone of the forearm on the same

What is the inside of the elbow joint called?

Ulnar collateral ligament (UCL): Located on the inside of the elbow, this major stabilizing ligament connects the humerus and the ulna.

What is another name for the elbow joint?


Joint From To
Humeroulnar joint trochlear notch of the ulna trochlea of humerus
Humeroradial joint head of the radius capitulum of the humerus
Proximal radioulnar joint head of the radius radial notch of the ulna

What tendons are in the elbow?

The two major tendons are the triceps and biceps tendon. The triceps tendon allows the joint to straighten and the biceps tendon allows the joint to bend. The major elbow nerve is the ulnar nerve. It is responsible for controlling the muscles of the hand and providing sensation to the small and ring fingers.

What are flexor tendons?

Flexor tendons run from the forearm to the ends of the fingers across the palm side of the hand. They control the ability to bend fingers down to the palm (for example to make a fist, grip, or pinch objects). When these tendons are cut or injured, it can be impossible to bend the fingers or thumb.

What are tendons made of?

Tendons are mostly collagen, one of the most abundant proteins in your body. Tendons also contain blood vessels and nerves. Collagen fibers are flexible, strong and resistant to damage. A tendon’s structure is similar to a fiberoptic cable or a rope, with small collagen fibers arranged in bundles.

What are tendons and ligaments composed?

Tendons and ligaments are mainly composed of type I collagen fibers surrounded by a mesh of loose connective tissue. The whole tendon transmits forces from muscle to bone. However, it also shows viscoelastic behavior such as creep or stress relaxation. Tendons respond dynamically to physical activity.

How are tendons formed?

Collagen fibrils form fibers that are bound by endotenon, a connective tissue that contains nerves, blood vessels, and lymphatics. The hierarchial structure continues with a group of collagen fibers forming a fiber bundle, a group of fiber bundles forming a fascicle, and a group of fascicles forming the tendon.

What connective tissue makes up tendons?

collagen fibers

Dense connective tissue is what makes up tendons and ligaments and consist of a higher density of collagen fibers.

What cells make up ligaments?

The principal cell types in tendon and ligament are fibroblast-like cells, termed tenocytes, or ligament fibroblasts that are located between parallel chains of collagen fibrils (14, 21).

Is joint a connective tissue?

Examples of connective tissue are fat, bone, and cartilage. These disorders often involve the joints, muscles, and skin, but they can also involve other organs and organ systems, including the eyes, heart, lungs, kidneys, gastrointestinal tract, and blood vessels.

What is connective tissue made up of?

Connective tissue is made up of cells, fibers, and a gel-like substance. Types of connective tissue include bone, cartilage, fat, blood, and lymphatic tissue.

What is bone connective tissue?

Abstract. Bone is a connective tissue containing cells, fibers and ground substance. There are many functions in the body in which the bone participates, such as storing minerals, providing internal support, protecting vital organs, enabling movement, and providing attachment sites for muscles and tendons.

What is a cartilage?

Cartilage a strong and smooth substance made up of “chondrocytes,” or specialized cartilage cells, that produce a matrix of collagen, proteoglycans (a special type of protein) and other non-collagenous proteins. These materials help cartilage attract water and give it its shape and specific properties.