Lecture 10(unit 2)-skeletal Muscle

Question 1

What are the 3 types of muscle tissue

Answer 1

-Skeletal Muscle
   • Pulls on skeletal bones
   •Voluntary contraction 
-Cardiac Muscle
   •Pushes blood through arteries and veins
   •Rhythmic contractions
-Smooth Muscle 
   •Pushes fluids and solids along the digestive tract, for example 
   •Involuntary contraction

Question 2

Muscle attachment

Answer 2

-Direct (fleshy)
•intercostal Muscle

-Indirect
•tendon
•beiceps Brachii or abdominal muscle

-Attachment to dermis

Question 3

Aponeurosis

Answer 3

• Attachment of Muscle by thin, broad sheet
• Composed of parallel bundles of collagen fibers
• E.g. external oblique aponeurosis

Question 4

Agonist or prime over

Answer 4

• muscle whose contraction is chiefly responsible for producing particular movement
• Ex: biceps Brachii for elbow flexion

Question 5

Synergist

Answer 5

• Muscle that helps larger agonist work efficiently
• May provide additional pull or stabilize Origin
• Ex: barchioradialis for elbow flexion

Question 6

Antagonist

Answer 6

• Muscle whose Action opposes particular agonist

- Ex: triceps is antagonist to the biceps

Question 7

Fixators

Answer 7

-Opposing muscles that contract simultaneously to prevent joint movement