University:
Biola University
Course:
BIOS 236 | Principles of Human Anatomy and Physiology
Academic year:

2024
Views:

282

Pages:

5
Author:

Dawson Thornton

1) Define the following key terms: a) Origin – b) Insertion – c) Flexor – d) Extensor – e) Agonist – f) Antagonist – g) Synergist – 2) List the approximate origins and insertions for the following (general area is fine): a) Trapezius: b) Teres Major: c) Deltoid: d) Latissimus Dorsi: e) Biceps Brachii Long Head: f) Biceps Brachii Short Head: g) Brachialis: h) Brachioradialis: i) Pectoralis Major: Muscles that move the shoulder girdle Match the layout of the muscle (origin to insertion) with its movement Prime mover Subclavius Pectoralis minor Serratus anterior Trapezius Rhomboid major Rhomboid minor Movement Stabilizes clavicle during movement by depressing it Rotates shoulder anteriorly (throwing motion); assists with inhalation Moves arm from side of body to front of body; assists with inhalation Elevates shoulders (shrugging); pulls shoulder blades together; tilts head backwards Stabilizes scapula during pectoral girdle movement Stabilizes scapula during pectoral girdle movement Target Target motion direction Origin Insertion Clavicle Depression First rib Inferior surface of clavicle Scapula; ribs Scapula: depresses; ribs: elevates Anterior surfaces of certain ribs (2–4 or 3–5) Coracoid process of scapula Scapula; ribs Scapula: protracts; ribs: elevates Muscle slips from certain ribs (1–8 or 1–9) Anterior surface of vertebral border of scapula Scapula; cervical spine Scapula: rotates inferiorly, retracts, elevates, and depresses; spine: extends Skull; vertebral column Acromion and spine of scapula; clavicle Scapula Retracts; rotates inferiorly Thoracic vertebrae (T2–T5) Medial border of scapula Scapula Retracts; rotates inferiorly Cervical and thoracic vertebrae (C7 and T1) Medial border of scapula 3) Buster Posey, SF Giants catcher, has been complaining of muscle pain in his right biceps brachii. Trace or draw an erythrocyte’s journey from the left ventricle of the heart to the biceps brachii to help doctors figure out where a circulation problem may occur. 4) Buster’s arm hurts the most during the cocking phase of throwing (seen below) To test the function of his right throwing arm, they need you to list all the anatomical motions (e.g. elbow flexion) muscles, joints, and nerves for the following: 1) Cocking phase seen here: 5) Botulinum toxin (aka botox) is a neurotoxic protein produced by the bacterium Clostridium botulinum and related species. It prevents the release of the neurotransmitter acetylcholine from axon endings at the neuromuscular junction, thus causing flaccid paralysis. The LA Dodgers’ coach decides to sabotage the Giant’s by preventing him from throwing the ball after the cocking motion seen above. To prevent the motion pictured below, what muscles would the evil coach need to “Botox?”