Forearm and Hand Anatomy Vocabulary

Vocabulary flashcards reviewing muscles, actions, innervations, joints crossed, and muscle compartments of the forearm and hand based on the lecture transcript.

Pronator Teres

A superficial anterior forearm muscle that pronates the forearm and flexes the elbow; innervated by the Median nerve; crosses the elbow joint.

Flexor Carpi Radialis

A superficial anterior forearm muscle that flexes and abducts the wrist; innervated by the Median nerve; crosses the wrist joint.

Palmaris Longus

A superficial anterior forearm muscle that flexes the wrist; innervated by the Median nerve; crosses the wrist joint.

Flexor Carpi Ulnaris

A superficial anterior forearm muscle that flexes and adducts the wrist; innervated by the Ulnar nerve; crosses the wrist joint.

Flexor Digitorum Superficialis

A superficial anterior forearm muscle that flexes digits $2-5$ and flexes the wrist; innervated by the Median nerve; crosses the wrist and adjacent phalanges.

Flexor Digitorum Profundus

A deep anterior forearm muscle that flexes digits $2-5$ and flexes the wrist; innervated $\frac{1}{2}$ by the median nerve and $\frac{1}{2}$ by the ulnar nerve; crosses the wrist and adjacent phalanges.

Flexor Pollicis Longus

A deep anterior forearm muscle that flexes the pollex and wrist; innervated by the Median nerve; crosses the wrist and thumb joints.

Pronator Quadrus

A deep anterior forearm muscle that pronates the forearm; innervated by the Median nerve; crosses the elbow joint.

Brachioradialis

A superficial muscle listed with the posterior forearm that flexes the elbow; innervated by the Radial nerve; crosses the elbow joint.

Extensor Carpi Radialis Longus

A superficial posterior forearm muscle that extends and abducts the wrist; innervated by the Radial nerve; crosses the wrist joint.

Extensor Carpi Radialis Brevis

A superficial posterior forearm muscle that extends and abducts the wrist; innervated by the Radial nerve; crosses the wrist joint.

Extensor Digitorum

A superficial posterior forearm muscle that extends digits $2-5$ and extends the wrist; innervated by the Radial nerve; crosses the wrist joint.

Extensor Digiti Minimi

A superficial posterior forearm muscle that extends digit $5$ and extends the wrist; innervated by the Radial nerve; crosses the wrist joint.

Extensor Carpi Ulnaris

A superficial posterior forearm muscle that extends and adducts the wrist; innervated by the Radial nerve; crosses the wrist joint.

Anconeus

A superficial posterior forearm muscle that extends the elbow; innervated by the Radial nerve; crosses the elbow joint.

Supinator

A deep posterior forearm muscle that supinates the forearm; innervated by the Radial nerve; crosses the elbow joint.

Abductor Pollicis Longus

A deep posterior forearm muscle that abducts and extends the pollex; innervated by the Radial nerve; crosses the wrist joint.

Extensor Pollicis Brevis

A deep posterior forearm muscle that extends the pollex; innervated by the Radial nerve; crosses the wrist joint.

Extensor Pollicis Longus

A deep posterior forearm muscle that extends the pollex; innervated by the Radial nerve; crosses the wrist joint.

Extensor Indicis

A deep posterior forearm muscle that extends the indicis; innervated by the Radial nerve; crosses the wrist joint.

Abductor Digiti Minimi

A medial muscle located in the hypothenar eminence that abducts digit $5$; innervated by the Ulnar nerve.

Flexor Digiti Minimi Brevis

A medial muscle located in the hypothenar eminence that flexes digit $5$; innervated by the Ulnar nerve.

Opponens Digiti Minimi

A medial muscle located in the hypothenar eminence that opposes digit $5$ by abducting, flexing, and rotating it; innervated by the Ulnar nerve.

Abductor Pollicis Brevis

A lateral muscle located in the thenar eminence that abducts the pollex; innervated by the Median nerve.

Flexor Pollicis Brevis

A lateral muscle located in the thenar eminence that flexes the pollex; innervated by the Median nerve.

Opponens Pollicis

A lateral muscle located in the thenar eminence that opposes the pollex by abducting, rotating, and flexing it; innervated by the Median nerve.

Antebrachium Fascial Compartments

The two primary muscle compartments of the forearm—Anterior (Flexor-Pronator) and Posterior (Extensor-Supinator)—separated by the interosseous membrane and intermuscular septa.

Hypothenar Eminence

The medial compartment/eminence of the hand containing muscles innervated by the ulnar nerve (Abductor digiti minimi, Flexor digiti minimi brevis, Opponens digiti minimi).

Thenar Eminence

The lateral compartment/eminence of the hand containing muscles innervated by the median nerve (Abductor pollicis brevis, Flexor pollicis brevis, Opponens pollicis).

Adductor pollicis

Adducts pollex. innervated by ulnar nerve

Palmar interosseous muscle

Adducts the digits. innervated by ulnar nerve

Dorsal interosseous muscle

Abducts the digits. Innervated by the ulnar nerve.

LUMBRICALS 1&2

INNERVATED BY MEDIAN NERVE

LUMBRICALS 3&4

INNERVATED BY ULNAR NERVE