Pectoralis minor muscle

In this article we will discuss about Pectoralis minor muscle. So let’s get started.

Pectoralis minor muscle

It originates from the upper margin and outer border of 3rd-5th rib near the costochondral junction and gets inserted into the medial border and superior surface of coracoid process of scapula. It is innervated through the medial pectoral nerve and artery supply is through the pectoral branch of thoracoacromial trunk. It’s chief function is depression of shoulder, moves scapula forward and downward and raise 3rd-5th rib which aid in inhalation. Clinically increased pressure in the nerves and blood vessels that supplies pectoralis minor muscle leads to pectoralis minor syndrome.

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Anterior interosseous nerve

In this article we will discuss about Anterior interrosseus nerve. So let’s get started.

Anterior interrosseus nerve

It is a branch of median nerve, it’s root value is C8-T1. It innervates deep muscles of anterior part of the forearm viz.

Flexor pollicis longus

Radial half of Flexor digitorum profundus

Pronator Quadratus

Injury to anterior interrosseus nerve leads to Anterior Interrosseus Nerve syndrome. Clinically it is often used as a donor branch to innervate paralysed muscle following ulnar nerve injury.

Abductor digiti minimi muscle of hand

In this article we will discuss about Abductor digiti minimi muscle of hand. So let’s get started.

Abductor digiti minimi muscle of hand

It originates from pisiform bone, pisohamate ligament and flexor retinaculum and gets inserted into the base of proximal phalanx of 5th digit on the ulnopalmar margin and the palmar plate of metacarpophalangeal joint. Some fibres gets inserted into the dorsal aponeurosis. It is innervated by the deep branch of ulnar nerve and artery supply is through the ulnar artery. It’s chief action is abduction of little finger at MCP joint and extension of middle phalanx of little finger.

What is Tenesmus?

In this article we will discuss about What is Tenesmus? So let’s get started.

Tenesmus

It is a feeling of incomplete defecation. It is the sense of inability or difficulty in emptying the bowel. It indicates the presence of residual fecal matter irrespective of actual presence. Common diseases associated with Tenesmus are

Colorectal cancer

Ulcerative colitis

Haemorrhoids

Inflammatory bowel disease

Celiac disease

Diverticulitis

Ischemic colitis etc

Opponens pollicis muscle

In this article we will discuss about Opponens pollicis muscle. So let’s get started.

Opponens pollicis muscle

It originates from the flexor retinaculum of the hand and tubercle of the trapezium bone and gets inserted into lateral side of first metacarpal. It is innervated by the median nerve and artery supply is through the superior palmar arch. It’s chief action is apposition of the thumb i.e touching the tip of the thumb with the tip of the fingers. Clinically carpel tunnel syndrome can lead to atrophy of opponens pollicis muscle.