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Bolvin-AnatomyCh8B
Review for the second muscle practical
| Question | Answer |
|---|---|
| condition in which a muscle has exhausted all sources of energy and can no longer contract | muscle fatigue |
| single brief contraction of a muscle fiber | msucle twitch |
| after muscle exhausts its supply of ATP it uses this chemical to make more ATP | creatine phosphate |
| painful byproduct of anaerobic glycolysis that builds up in the muscles | lactic acid |
| the immovable end of a muscle | origin |
| moveable end of a muscle | insertion |
| muscle that functions to raise the eyebrow | obicularis oculi |
| Muscle that has its origins on the sternum and clavicle and it insertion on the mastoid process of the temporal bone, it pulls the head to one side if one contracts or bows the head if both contract | sternocleidomastoid |
| muscle that closes the lower jaw, its orgin is on the lower zygomatic arch and its insertion is on the lateral mandible | masseter |
| muscle with origins on the occipital bone and spines of the cervical and thorasic vertebrae and its insertions on the clavicle, spine and acromion process of scapula. Function- rotates scapula and raises arm, raises scapula | trapezius |
| origin: coracoid process and tubercle of scapula insertion: radial tuberosity Function: flexes forearm at the elbow | biceps brachii |
| muscle with origins on the spines of sacral, lumbar and lower thorasic vertebrae as well as the iliac crest and lower ribs. Its insertion is on the humerous. This muscle extends and adducts arm and rotates humerus inward | latissimus dorsi |
| The origin of this muscle is on the acromion process, spine of scapula and the clavicle, This muscle's function is to abduct arm,extend or flex the humerus. Its insertion is the deltoid tuberosity of the humerus | deltoid |
| muscle that extends the wrist and abducts the hand | extensor carpi radialis |
| muscle that tenses the abdominal wall and compresses the abdominal contents. It does not flex the vertebral column | external oblique |
| muscle that flexes and abducts the wrist. Its origin is on the medial epicondyle of the humerus and its insertion is on the base of the second and third metacarpal | flexor carpi radialis |
| muscle of the thigh that extends the leg at the knee, its origin is on the medial surface of the femur and insertion is the patella | vastus medialis |
| Muscle with its origin on the greater trochanter of the femur and inserts in the patella, it extends the leg at the knee | vastus lateralis |
| compresses cheeks inward | buccinator |
| closes and protrudes lips (kissing muscle) | obicularis oris |
| muscle of the trunk that pulls arm anteriorly and across the chest. It also rotates humerus or adducts arm | pectoralis major |
| muscle that has its origins on the medial epicondyle of the humerus and the olecranon process. Its insertions are on the carpal and metacarpal bones. Its function is to flex and adduct the wrist | flexor carpi ulnaris |
| arm muscle that inserts of the lateral radius and has its origins on the tubercle below the glenoid cavity and lateral and medial surfaces of the humerus | triceps brachii |
| trunk muscle that tenses & compresses the abdomen as well as flexing the vertebral column | rectus abdominis |
| leg muscle with its origin on the spine of the ilium and margin of the acetabulum. Its insertion is on the patella it extends the leg at the knee | rectus femoris |
| muscle that flexes the leg and extends the thigh. Origins on the ishical tuberosity and posterior femur. Insertions on head of the fibula and lateral condyle of the tibia | biceps femoris |
| Muscle with origin on the anteior iliac spine and insertion on the medial surface of the tibia. This muscle flexes the leg and thigh, abducts the thigh, rotates the thigh laterally and rotates the leg medially | sartorius |
| leg muscle that allows plantar flexion of the foot and flexion of the leg at the knee, Its insertion is on the lateral and medial condyles of the femur and its insertion is on the posterior surface of the calcaneus | Gastrocnemius |
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abolvin
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