Muscular System Chapter 11 Flashcards

Study Notes

Appendicular Musculature Overview

Responsible for stabilizing the pectoral and pelvic girdles.
Facilitates movement of the upper and lower limbs.
Absorbs shocks during activities like walking, running, and jumping.
Strengthens joint areas to enhance stability.

Major Groups of Appendicular Muscles

Muscles of the pectoral girdle and upper limbs.
Muscles of the pelvic girdle and lower limbs.

Muscle Groups Associated with Pectoral Girdle and Upper Limbs

Muscles that position the pectoral girdle.
Muscles that move the arm.
Muscles that move the forearm and hand.
Forearm muscles that control hand and finger movement.

Key Muscles of the Pectoral Girdle

Levator Scapulae: Elevates the scapula.
Pectoralis Minor: Protracts the shoulder.
Rhomboid Major/Minor: Adduct the scapula toward the midline.
Serratus Anterior: Protracts the scapula.
Subclavius: Protracts the scapula.
Trapezius: Rotates scapula and extends the neck.

Key Muscles Moving the Arm

Deltoid: Abducts the arm; covers shoulder joint.
Pectoralis Major: Adducts and medially rotates the arm.
Coracobrachialis: Adducts at the shoulder.

Muscles of the Upper Arm

Biceps Brachii: Flexes the lower arm; consists of short and long heads.
Teres Major: Responsible for extension and medial rotation at the shoulder.
Subscapularis: Medial rotation at shoulder.
Supraspinatus: Abducts at the shoulder.
Triceps Brachii: Extends the lower arm; includes three heads (lateral, long, medial).

Forearm Muscles

Brachialis: Flexes at the elbow.
Brachioradialis: Flexes at the elbow.
Flexor Carpi Radialis: Flexes and abducts the wrist.
Palmaris Longus: Flexes at the wrist.
Flexor Carpi Ulnaris: Flexes and adducts the wrist.

Extensor Muscles of the Forearm

Anconeus: Extends at the elbow.
Extensor Carpi Radialis Longus: Extends and abducts at the wrist.
Extensor Carpi Ulnaris: Extends and adducts at the wrist.
Extensor Carpi Radialis Brevis: Extends and abducts at the wrist.

Finger and Thumb Movements

Flexor Digitorum Superficialis: Allows flexion at the wrist and some digits.
Flexor Pollicis Longus: Flexes the thumb.
Abductor Pollicis Longus: Abducts the thumb.
Extensor Digitorum: Extends fingers and wrist.
Extensor Pollicis Brevis: Extends and abducts the thumb.
Extensor Digiti Minimi: Extends the little finger.

Description

Explore the appendicular musculature through this flashcard quiz focused on Chapter 11 of the Muscular System. Test your knowledge of the functions and groups of muscles responsible for stabilizing and moving the limbs. Ideal for students looking to strengthen their understanding of anatomy.