Volar interosseous artery
Encyclopedia
The anterior interosseous artery (volar interosseous artery) is an artery
of the forearm.
on the volar
surface of the interosseous membrane
.
It is accompanied by the volar interosseous branch of the median nerve
, and overlapped by the contiguous margins of the flexor digitorum profundus and flexor pollicis longus, giving off in this situation muscular branches, and the nutrient arteries of the radius
and ulna
.
At the upper border of the Pronator quadratus
it pierces the interosseous membrane and reaches the back of the forearm, where it anastomoses with the dorsal interosseous artery.
It then descends, in company with the terminal portion of the dorsal interosseous nerve, to the back of the wrist to join the dorsal carpal net-work.
The volar interosseous artery gives off a slender branch, the arteria mediana, which accompanies the median nerve
, and gives offsets to its substance; this artery is sometimes much enlarged, and runs with the nerve into the palm of the hand.
Before it pierces the interosseous membrane the anterior interosseous sends a branch downward behind the pronator quadratus
to join the volar carpal network.
Artery
Arteries are blood vessels that carry blood away from the heart. This blood is normally oxygenated, exceptions made for the pulmonary and umbilical arteries....
of the forearm.
Course
It passes down the forearmForearm
-See also:*Forearm flexors*Forearm muscles...
on the volar
Volar
Volar may refer to:*Volar, Afghanistan*Flight*Volar Airlines*Anatomical terms of location#Relative_directions_in_the_limbs**Volar arches**Volar branch of ulnar nerve**Volar radioulnar ligament**Volar carpal branch...
surface of the interosseous membrane
Interosseous membrane
An interosseous membrane is a broad and thin plane of fibrous tissue that separates many of the bones of the body. It is an important component of many joints.Interosseous membranes in the human body:* Interosseous membrane of the forearm...
.
It is accompanied by the volar interosseous branch of the median nerve
Median nerve
The median nerve is a nerve in humans and other animals. It is in the upper limb. It is one of the five main nerves originating from the brachial plexus....
, and overlapped by the contiguous margins of the flexor digitorum profundus and flexor pollicis longus, giving off in this situation muscular branches, and the nutrient arteries of the radius
Radius
In classical geometry, a radius of a circle or sphere is any line segment from its center to its perimeter. By extension, the radius of a circle or sphere is the length of any such segment, which is half the diameter. If the object does not have an obvious center, the term may refer to its...
and ulna
Ulna
The ulna is one of the two long bones in the forearm, the other being the radius. It is prismatic in form and runs parallel to the radius, which is shorter and smaller. In anatomical position The ulna is one of the two long bones in the forearm, the other being the radius. It is prismatic in form...
.
At the upper border of the Pronator quadratus
Pronator quadratus
Pronator quadratus is a square shaped muscle on the distal forearm that acts to pronate the hand.As it is on the anterior side of the arm, it is innervated by a branch of the median nerve, the anterior interosseous nerve...
it pierces the interosseous membrane and reaches the back of the forearm, where it anastomoses with the dorsal interosseous artery.
It then descends, in company with the terminal portion of the dorsal interosseous nerve, to the back of the wrist to join the dorsal carpal net-work.
The volar interosseous artery gives off a slender branch, the arteria mediana, which accompanies the median nerve
Median nerve
The median nerve is a nerve in humans and other animals. It is in the upper limb. It is one of the five main nerves originating from the brachial plexus....
, and gives offsets to its substance; this artery is sometimes much enlarged, and runs with the nerve into the palm of the hand.
Before it pierces the interosseous membrane the anterior interosseous sends a branch downward behind the pronator quadratus
Pronator quadratus
Pronator quadratus is a square shaped muscle on the distal forearm that acts to pronate the hand.As it is on the anterior side of the arm, it is innervated by a branch of the median nerve, the anterior interosseous nerve...
to join the volar carpal network.