Ulnar nerve

Nervus ulnaris

Arises from the medial cord of the brachial plexus (C8-T1). It passes posterior to the medial epicondyle of the humerus (vulnerable to injury), enters the forearm between the heads of flexor carpi ulnaris, and enters the hand through Guyon's canal.

类型 Nerve
身体系统 Nervous
身体区域 Forearm
上级结构 arm nerve
拉丁名称 Nervus ulnaris
FMA ID 37319

功能

Provides motor innervation to the hypothenar muscles, interossei, adductor pollicis, and medial two lumbricals. Provides sensory innervation to the medial one and a half digits and corresponding palm area.

临床意义

Ulnar nerve entrapment at the elbow (cubital tunnel syndrome) is the second most common nerve entrapment. Ulnar nerve injury causes claw hand deformity. The funny bone sensation is the ulnar nerve passing posterior to the medial epicondyle.

常见问题

What is the Ulnar nerve?
Arises from the medial cord of the brachial plexus (C8-T1). It passes posterior to the medial epicondyle of the humerus (vulnerable to injury), enters the forearm between the heads of flexor carpi ulnaris, and enters the hand through Guyon's canal.
What is the function of the Ulnar nerve?
Provides motor innervation to the hypothenar muscles, interossei, adductor pollicis, and medial two lumbricals. Provides sensory innervation to the medial one and a half digits and corresponding palm area.
What body system is the Ulnar nerve part of?
The Ulnar nerve is part of the Nervous.
What conditions affect the Ulnar nerve?
Ulnar nerve entrapment at the elbow (cubital tunnel syndrome) is the second most common nerve entrapment. Ulnar nerve injury causes claw hand deformity. The funny bone sensation is the ulnar nerve passing posterior to the medial epicondyle.
Where is the Ulnar nerve located?
The Ulnar nerve is located in the Forearm region of the body.

相关结构

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