Screws_Anderson Test Muscular System

Question 1

4. Skeletal muscle must work in pairs because…

Answer 1

Muscle cells can only contract

Notability - 44 WKST - The Muscular System - Notes

Question 2

7. What does a flexor muscle do?

Answer 2

Decreases the angle of the joint

Notability - 44 WKST - The Muscular System - Notes

Question 3

8. Is the biceps brachii a flexor or an extensor?

Answer 3

Flexor

Notability - 39. CLF - Exterior Muscle of the Body

Question 4

9. What is the ribbon like connective tissue that connects muscle to bone?

Answer 4

Tendon

Notability- 44 WKST - The Muscular System - Notes

Question 5

10. The triceps brachii is an extensor or a flexor?

Answer 5

Extensor

Notability- 39. CLF - Exterior Muscle of the Body

Question 6

11. An extensor increases or decreases the angle of the joint?

Answer 6

An extensor increases the angle of the joint

Notability - 39. CLF - Exterior Muscle of the Body

Question 7

26. Which type of muscle reacts and tires quickly?

Answer 7

Skeletal System

Notability - 44. WKST - The Muscular System - Notes

Question 8

35. What type of movement does a hinge joint allow?

Answer 8

Inward and outward

Notability - 47. Lab - A look beneath the Skin - Questions - A Look Between The Skin

Question 9

38. What muscles allow you to nod?

Answer 9

Sternocleidomastoid and trapezius

Notability - 39. CLF - Exterior Muscle of the Body

Question 10

41. True or False: the latissimus dorsi is above the gluteus maximus

Answer 10

True

Notability - 39. CLF - Exterior Muscle of the Body

Question 11

46. Which muscle contracts so that you can bend your leg at the knee?

Answer 11

Hamstring

Notability - 39. CLF - Exterior Muscle of the Body

Question 12

47. What muscle raises the shoulders?

Answer 12

Trapezius

Notability- 39. CLF - Exterior Muscle of the Body

Question 13

53. Where is the external oblique located?

Answer 13

On either side of the rectus magnus

Notability - 39. CLF - Exterior Muscle of the Body

Question 14

54. True or False: the deltoid muscles helps us lift our feet off the ground.

Answer 14

False, helps us lift our arms away from our bodies

Notability- 39. CLF - Exterior Muscle of the Body

Question 15

58. What is the large muscle that is used to jump or climb up stairs?

Answer 15

Gluteus maximus

Notability- 39. CLF - Exterior Muscle of the Body

Question 16

65. Provides support for the abdomen and its many organs

Answer 16

Rectus abdominis

Notability- 39. CLF - Exterior Muscle of the Body

Question 17

67. A triangular muscle that moves the arm away from the center of the body

Answer 17

Deltoid

Notability- 39. CLF - Exterior Muscle of the Body

Question 18

68. Strap-like muscles that extend from the ribs to the pelvis.

Answer 18

Rectus abdominis

Notability- 39. CLF - Exterior Muscle of the Body

Question 19

74. What muscle is used in the forehead when frowning?

Answer 19

Frontalis

Notability- 46. CLF - Muscles of the Head

Question 20

Essay - explain how muscles work as a pair to bend and straighten the arm at the elbow causing movement at the joint.

Answer 20

Flexion of a joint is a decrease in the joint angle from the body in anatomic position. When the elbow is bent when the form is flexed which means that the flexor is contracted or has pulled the bone of the forearm. Most election takes place in a forward direction. The exception to this is the leg where flexion of the leg results in the bending of the knee. Extension of the joint is when the joint is returned to anatomical position or increases the angle of the joint, which means extensor is contract. An Example of this is when tried the triceps brachii contracts to straighten the arm. The biceps brachii muscle in the upper arm contracts to bend the elbow. Muscles work in pairs so that at the same time, the biceps brachii muscle contracts to bend the joint and the triceps brachii returns to its original length. To straighten the arm or extend the joint, the triceps brachii contracts while the biceps brachii returns to its original length.