Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Objective wk 4
| Answer | |
|---|---|
| What are the three different muscle tissue types? | Cardiac Skeletal Smooth |
| List the 4 functional characteristics shared by all muscle tissues. | Excitablility- Response to stimuli causing contraction Contractility- Shorten Elasticity- Muscles ability to return to original length Extensibility- Extension in length in response to opposite muscle contraction |
| What is Sarcolema | plasma membrane of muscle fiber |
| What is a sarcomere? | Contractile unit of a muscle fiber. Z-disk to Z-disk. |
| What is a ligament? | bone to bone |
| What is perimysium? | internal covering of shealth surrounding muscle fascicles |
| What is endomysium? | layer of connective tissue that enshealths a muscle fiber |
| What is epimysium? | Outer layer of muscle fiber |
| What is a fascicle? | A bundle of skeletal muscle fibers |
| What is troponin? | attaches to actin. Provides binding site for Calcium. |
| What is the contractile unit of a muscle fiber called? | Sarcomere |
| What are the components of the sliding filament theory? | Thick and thin filaments. Actin-make up the strand Tropomysin- Binds to calcium and spins to provide new binding site Troponin |
| What are the components of the thick and thin filaments? | thick- bundles of myosin thin-myofilament composed of Actin, Troponin and Myosin |
| What is the Z-disk | Center of I-band where thin filaments attach |
| What is the I-band | Light band containing thin filaments only and titan proteins |
| 12. What is neuromuscular junction? | Where the neuron and muscle meet |
| What are synaptic vesicles? | House Acetocholine |
| 13. What is a motor unit? List the components of a typical motor unit. | Consists of a single motor neuron and the muscle that it controls1) Motor neuron2) Neuromuscular junction3) Muscle fibers |
| Slow oxidative | High fatigue, small diameter, Myoglobin-present,Aerobic, large blood supply |
| Fast oxidative | High fatigue, Medium diameter, No myoglobin, Aerobic, large blood supply |
| What is an origin? | The point of attachment to the bone that doesn't move |
| List the methods used in naming muscles. | 1)Muscle action 2) Specific body region 3)Muscle attachments 4)Orientation of muscle fibers |
| What are the seven different fascicle arrangements of skeletal muscle? Give an example of each. | 1)Circular 2)Parallel 3) Convergent 4) Epipennate 5)Bipennate 6)multipennate |
| What are the components of a lever? | 1)Ablility to change speed and distance of movement produced by a force 2)The direction of applied force 3)Force strength |
| What are 1st class levers? | Has fulcrum in the middle b/t effort and resistance Eg) Atlanto occipital joint of neck |
| Trapezius | O: Occipital, vertebrae I: Clavicle, Acromion process, spine of scapula A: Retract, depress and elevate the scapula |
| Masseter | O:Zygomatic I: Mandibular Ramus A: Elevates and protracts mandible |
| Sternocleidomastoid | O: Manubrium of sternum, clavicle I: mastoid process A:unilateral and bilateral action |
| Pectoralis Major | O: Clavicle, sternum I: Humerus A: Primary mover of arm, adducts and rotates arm medially |
| Pectoralis Minor | O: Ribs I: Corocoid process of scapula A: Protracts and depresses scapula |
| Latissimus Dorsi | O: Ribs, iliac crest I: Humerus A: primary mover of arm, adducts and medially rotates the arm |
| Serratus anterior | O: Ribs I: Medial border of scapula A: prime mover in scapular protraction |
| Trapezius | O: occipital I: Acromion process, spine of scapula, clavicle A: Retract, Depress and elevate scapula |
| Teres Major | O: Scapula I: Humerus A: Extends, adducts and rotated the arm medially |
| Rectus abdominis | O: pubic bone I: Xiphoid process, sternum and ribs A: Flexes vertebral column, compresses abdominal wall |
| Deltoid | O: Clavicle, spine of scapula I: Humerus A: Anterior, Posterior and Middle fibers |
| Supraspinatus | O: Scapula I:Humerus A:Abducts the arm |
| Infraspinatus | O:Scapula I:Humerus A:Adducts and laterally rotates the arm |
| Teres minor | O:Scapula I: Humerus A: Adducts and laterally rotates the arm |
| Subscapularis | O: Scapula I: Humerus A:medially rotated the arm |
| Triceps brachii | O: Scapula I: Olecranon process of Ulna A: Extends and adducts the arm |
| Biceps brachii | O: Scapula I: Radius A: Flexes the arm |
| Rectus Femoris | O: Ilium I: tibial tuberosity A: Flexes thigh and extends the leg |
| Vastus Lateralis | O:Femur I: tibial tuberosity A:Extends the leg |
| Vastus Medialis | O: Femur I: tibial tuberosity A: Extends the leg |
| Sartorius | O: Iliac spine I: tibial tuberosity A:Flexes thigh and leg |
| Gluteus Maximus | O: Iliac crest, sacrum and coccyx I:Femur A: Extends the leg |
| Semimembranosus | O: Ischial tuberosity I: Tibia A: Extends thigh and flexes leg, medially rotates the leg |
| Semitendinosus | O: Ischial tuberosity I: Tibia A: Tibial division of sciatic nerve |
| Biceps Femoris | O: Ischial tuberosity Femur A: Fubula |
| Gastrocnemius | O: Femur I: Calcaneus A: Flexes leg and foot |
| Soleus | O:Fibula and Tibia I: Calcaneus A: Plantar flexes the foot |
| What is a Sarcoplasm? | Cytoplasm of muscle fiber |
| What is a myofibril? | Organized bindles of myofilaments |
| What are T-Tubules? | Tubular extensions of sarcolemma into sarcoplasm |
| What is Sarcoplasmic Reticulum? | Smooth ER in a muscle fiber. Storage for calcium |
| What are thick filaments? | Fine protein mypfilament composed of bundles of myosin |
| What is a tendon? | Muscle to bone |
| What is a muscle fiber? | Smallest muscle within a muscle |
| What is Tropomyosin? | Covers Actin Strands |
| What is A-band? | Dark band in middle of sarcomere. Thick filaments only |
| What is the M-Line? | Thin transverse protein. Keeps aligned during contraction |
| What is the H-Zone? | the middle of the A band, where only thick filaments are present |
| What is the synaptic cleft? | Small space seperating the knob and motor plate |
| Fast glycolic | Low fatigue, Large Diameter, No myoglobin, Anaerobic, sparse blood supply |
| What is the insertion? | Point of attachment to bone that does move |
| What is the primary mover? | Muscle that contracts to produce particular movement |
| What is the Agonist? | What helps the muscle move in a direction that it wants |
| What is the Antagonist? | Goes the opposite way of agonist |
| What is a synergist muscle? | Muscle helping the Agonist |
| Second class levers? | B/t fulcrum and applied effort Eg) Plantar flexion |
| 3rd class levers? | Most common. Effort applied b/t resistance and fulcrum Eg) Elbow where fulcrum is the joint b/t humerus and ulna |
| 15. How are joints classified? | structurally and functionally |
| What are the structural classifications of joints | fibrous, cartilaginous, synovial |
| What are the functional characteristics of joints? | synarthroses, amphiarthroses, diarthroses |
| What are the three types of fibrous joints and where are they located? | Gomphosis- teeth with mandible and maxilla, suture- bones of skull, syndesmosis- b/t radius and ulna |
| What are the two types of cartilaginous joints? | synchondroses- immobile joints with bones joined by hyaline cartilage, symphyses- slightly movable. pad of cartilage between articulation. |
| What is bursae? | fluid filled area within the knee |
| What are the three types of muscle metabolism | creatine phospate, lactic acid and aerobic repiration |
| what is aponeurosis | muscle to muscle attachment |
| What is a satellite cell | repair cell on outside of skeletal muscle fiber |
Created by:
1071679203
Popular Biology sets