Notes – Arm muscles Power point time “The most effective way to cope with change is to help create it.” L.W. Lynett . Title: Anat & Phys 1/26/07 Class Topics Objectives: Friday, March 7, 20149:18 AM
Class Assignments What By When • Lab Practical II 2/5/07 • Due this class period • Due next class period • Due in the future
Power Point • One slide for each muscle identified in the cat • The muscle must be labeled • Either by an arrow, a number or by name on the picture • This is mostly for your review purposes!
Pectoantebrachialis Pectoralis major Pectoralis minor Xiphihumeralis Serratus anterior Latissimus dorsi Spinotrapezius Acromiotrapezius Clavotrapezius Rhomboidius major Rhomboideus minor Levator Scapulae Teres major Clavobrachialis Acromiodeltoid Spinodeltoid Sternomastoid Cleidomastoid Sternohyoid Digastric Muscles to be identified in the cat
Biceps brachii • Attachments • short head • coracoid process • long head • glenoid tuberosity (glenoid cavity) • Radial tuberosity • Bicepital aponeurosis • Action • Flexes forearm
Triceps brachii • Attachments • Proximal • Lateral head • superior margin of humerus • Long head • Glenoid tuberosity (Glenoid cavity) • medial head • Humerus • Distal • Olecranon process • Action • Extends forearm
Epitrochlearis • Only in cat • Covers the triceps brachii
Brachioradialis • Attachments • Lateral epicondyle of humerus • Styloid process of radius • Actions • Flexes forearm
Brachialis • Attachments • distal surface of humerus (shaft) • Coronoid process of ulna • Actions • Flexes forearm
Rectus Abdominis • Attachments • Pubic symphysis • Xiphoid process, costal cartilage of ribs 5-7 • Actions • Flexes vertebral column • depresses ribs
External Oblique • Attachments • Lower eight ribs • linea alba, and iliac crest • Actions • compresses abdomen, flexes or bends spine
Internal Oblique • Attachments • Lumbodorsal fascia, iliac crest • Lower ribs, xiphoid process, linea alba • Actions • Same as external oblique
Transverse Abdominis • Attachments • Lower ribs, iliac crest, lumbodorsal fascia • Linea alba, pubis • Actions • compresses abdomen
Dissection activities • Continue dissection of arm muscles • Dissection of abdominal muscles • Have to go through thick fascia to get to rectus abdominis • External oblique is already visible • You must CUT through the external oblique to get to internal oblique and transverse abdominis • Check the direction the fibers are running!
Biceps brachii Triceps brachii Long head Lateral head Medial head Epitrochlearis Brachialis Brachioradialis Rectus abdominis Internal oblique External oblique Transverse abdominis Lab Practical II As well as all muscles from Lab Practical I