Muscles

Question 1

Match the term to the definition

1. Brevis
2. Digitorum
3. Hallucis
4. Rectus
5. Flexor
6. Pronator

A) related to fingers/ toes

B) straight

C) short

D) decreases the angle between the bones

E) turns palm down

F) related to the hallux

Answer 1

1C

2A

3F

4B

5D

6E

Question 2

Muscles with a triangular shape, such as pectoralis major, typically have a:

A) convergent fascicle arrangement

B) spiral fascicle arrangement

C) parallel fascicle arrangement

D) unipennate fascicle arrangement

Answer 2

A) Convergent fascicle arrangement

Question 3

Which of the following is not a component of the lever system

A) load

B) force

C) fulcrum

D) axis

Answer 3

D) axis

Question 4

Which function is being fulfilled by a muscle that holds a bone steady during movement

A) antagonist

B) synergist

C) supinator

D) fixator

Answer 4

D) fixator

Question 5

Which eye muscle passes through the trochlea and turns the eye inferiorly and laterally?

A) lateral rectus muscle

B) inferior rectus muscle

C) inferior oblique muscle

D) superior oblique muscle

Answer 5

D) superior oblique muscle

Question 6

The thick, bandlike muscle of mastication that covers much of the ramus of the mandible is the:

A) masseter muscle

B) spinalis muscle

C) lateral pterygoid muscle

D) risorius muscle

Answer 6

A) masseter muscle

Question 7

Which of the following muscles assists in lateral flexion ( extends) of the vertebral column

A) quadratus lumborum muscle

B) internal intercostal muscle

C) rotatores muscle

D) semispinialis capits muscle

Answer 7

A) quadratus lumborum muscle

Question 8

Which of the following groups of muscles is considered muscles of Inspiration

A) external intercostal muscles

B) internal intercostal muscles

C) external oblique muscles

D) internal oblique muscles

Answer 8

A) external intercostal muscles

Question 9

Which is not a muscle of the rotator cuff

A) teres major muscle

B) teres minor muscle

C) subscapularis muscle

D) infraspinatus muscle

E) supraspinatus muscle

Answer 9

A) teres major muscle

Question 10

Which of the following muscles flexes the thigh, but also laterally flexes the vertebral column when it’s origin and insertion switch?

A) sartorius muscle

B) psoas major muscle

C) iliacus muscle

D) rectus abdominis muscle

Answer 10

B) psoas major muscle

Question 11

The anatomy of a muscle fibre includes :

Muscle fibre/cell, endomysium, perimysium, epimysium, fascicle

Explain the location of each

Answer 11

• The muscle fibre/ cell is first
• cell/fibre is wrapped on endomysium
• a group of those cells wrapped in endomysium are then wrapped together in epimysium
• a big group of those are then wrapped in epimysium
• > the resulting product is the fascicle

Question 12

The muscle used to tense the skin of the neck or to depress the lower lip would be:

A) platysma

B) orbicularis oris

C) buccinator

D) orbiculris oculi

Answer 12

A) platysma

Question 13

The muscle that helps us to whistle & suck as well as pushing food against our teeth while we eat would be:

A) platysma

B) orbicularis oris

C) buccinator

D) orbiculris oculi

Answer 13

C) buccinator

Question 14

The muscle used for articulation (speaking) & mastication (to chew) and to purse are lips would be:

A) platysma

B) orbicularis oris

C) buccinator

D) orbiculris oculi

Answer 14

B) orbicularis oris

Question 15

The muscle used for squeezing your eye closed and blinking would be would be:

A) platysma

B) orbicularis oris

C) buccinator

D) orbiculris oculi

Answer 15

D) orbiculris oculi

2 portions
Orbital-> squeezing eye closed
Palpebral-> blinking

Question 16

What are the main muscles of mastication (to chew) SATA

A) sternocleidomastoid m.

B) Torticollis

C) temporalis m.

D) orbicularis oculi m.

E) masseter m.

Answer 16

C) temporalis m.

E) orbicularis oculi m

Question 17

SATA, what are the muscles that make up the erector spinae

Iliocostalis m.

Latissimis Dorsi m.

Teres major m.

Spinalis m.

Longissimus m.

Serratus anterior

Trapezius

Answer 17

Iliocostalis m., longissimus m., spinalis m.

Question 18

The latissimus dorsi orginates at the inferior 6 t-vertebrae, Iliac crest, and inferior 3-4 ribs

Where is the instertion of the latissimus dorsi and what is the function

Answer 18

(I) intertubercular groove

(A) extends, adducts, rotates humerous medially at shoulder joint

Question 19

The serratus anterior is a large saw like muscle that overlies the lateral aspect of the thorax and the intercostal mm. It functions to protract the scapula and it holds/fixes it in place which is important for shoulder movement

What is the orgin and insertion of the serratus anterior?

Answer 19

Orgin: external surfaces of the lateral of 1-8th rib

Insertion: anterior surface or medial border of scapula

Question 20

The ______ elevates, contracts & retracts the scapula, weakness in this muscle causes drooping of the shoulders

Answer 20

Trapezius

Question 21

What are the 4 muscles that make up the ‘rotator cuff’

Answer 21

Supraspinatus
Infraspinatus
Teres minor
Subscapularis

Question 22

The supraspinatus, infraspinatious and teres minor all insert on the _________ however they originate in different spots, where do they originate?

Answer 22

Greater tubercle of the humerous

Supraspinatus-> supraspinatus fossa
Infraspinatus -> infraspinatus fossa
Teres minor-> lateral border of scapula

The subscapularis is oppsite , in function and therefore orgin and insertion

Subscapularis fossa (O) 
Lesser tuberical [I]