Hypothenar by Hadiuzzaman .pptx

Pppp

1. Hypothenar Muscle Presented by, M HADI UZ ZAMAN ANSARI 1 st BHMS 2022-23 SESSION ROLL NO-14 Under the guidance of : Dr. Sanjib Sarkar (H.O.D., Dept. Of Anatomy)

2. Intrinsic Muscle A group of muscles located within or situated deeper in a structure Thenermuscle Hypothenar muscle Interosseimuscle

3. HYPOTHENER MUSCLE The hypothenar eminence is made up of four muscles, but there are only three primary muscles. Abductor digiti minimi muscle, Flexor digiti minimi brevis muscle, Opponens digiti minimi muscle, Palmaris brevis muscle

4. ABDUCTOR DIGITI MINIMI ORIGIN : • Pisiform bone INSERTION : • Base of proximal phalanx of little finger NERVE SUPPLY : Deep branch of ulnar nerve ACTION : • Abduction of little finger.

5. FLEXOR DIGITI MINIMI ORIGIN : • Hamate bone • Flexor retinaculum INSERTION : Base of proximal phalanx of little finger NERVE SUPPLY : • Deep branch of ulnar nerve ACTION : Flexion of little finger

6. OPPONENS DIGITI MINIMI ORIGIN : • Hamate • Flexor retinaculum INSERTION : • Shaft of 5 th metacarpal bone NERVE SUPPLY : • Deep branch of ulnar nerve ACTION : • Flexor of 5 th metacarpal and rotate it. (as making the palm hollow)

7. PALMARIS BREVIS This muscle is superficial and lies under the skin ORIGIN : Flexor retinaculum • Palmar aponeurosis INSERTION : Skin along medial border of hand NERVE SUPPLY : Ulnar nerve ACTION:Helps in gripping by wrinkling the skin .