Muscle Anatomy

Question 1

What are the 4 characteristics of skeletal muscle?

Answer 1

1.) Long Fibers
2.) Multinucleated
3.) Voluntary Movement
4.) Striated

Question 2

What is the primary function of the Latissimus Dorsi?

Answer 2

Shoulder Extension

Question 4

What are the 4 characteristics of skeletal muscle?

Answer 4

1. Long fibers
2. Multinucleated
3. Voluntary Movement
4. Striated

Question 5

What is the function of the Latissimus Dorsi?

Answer 5

Shoulder Extension

Question 6

Difference between Muscle cell and Muscle Fiber?

Answer 6

Both mean the same thing

Question 7

What is Sarcolemma and it’s function?

Answer 7

The cell membrane of the muscle cell and it is the outside covering

Question 8

What are Myofibrils?

Answer 8

The big circles that are bunched together and are located in muscle fibers

Question 9

What is the blue stuff that contains calcium ions that allows us to contract muscles?

Answer 9

Sarcoplasmic Reticulum

Question 10

What are the little dots in the myofibrils called?

Answer 10

Myofilaments

Question 11

Describe the Terminal Cisternae…

Answer 11

Thick Blue ends that surround the transverse tubule

Question 12

What is the purple stuff in between terminal cisternae?

Answer 12

Transverse Tubule

Question 13

Mitochondria does what for the muscle?

Answer 13

Provides ATP for muscle to contract

Question 14

The two types of myofilaments are what?

Answer 14

A bond and I bond

Question 15

What is the primary mover responsible for action?

Answer 15

Agonist

Question 16

Opposite direction of the agonist…

Answer 16

Antagonist

Question 17

Muscle that assists an agonist, often by supplementing the contraction force…

Answer 17

Synergist

Question 18

Where is the epicranius muscle and it’s function?

Answer 18

Frontal bone, used to raise eyebrows and wrinkle forehead.

Question 19

Where is the orbicularis Oculi and it’s function?

Answer 19

Circular muscle around the eyes, used to close the eyes tight

Question 20

Where is the Nasalis and what is it’s function?

Answer 20

Located on the bridge of the nose which helps to flare the nostril

Question 21

Where is the zygomaticus and and what it’s function?

Answer 21

Located near the mouth and it elevates the outer lips, helps us smile

Question 22

Where is the Orbicularis Oris and what is it’s function?

Answer 22

Around the top and bottom of our lips, helps us to kiss

Question 23

Where is the risorius and what is it’s function?

Answer 23

Located lateral to the mouth, used to grimace when you see something you do not like

Question 24

What does the depressor labii do?

Answer 24

Pulls the lower lip down

Question 25

What does the depessor anguli oris do?

Answer 25

Makes a sad face

Question 26

Where is the buccinator and what does it do?

Answer 26

Located in the cheeks and allows us to blow or whistle

Question 27

Where is the temporalis and what is its function?

Answer 27

Close the mouth, elevate the mandible and it is located on the temporal bone.

Question 28

Where is the masseter and what is it’s function?

Answer 28

Inferior to the temporal muscle and it’s function is to close the mouth and elevate the mandible

Question 29

What is the big muscle in the neck attatched to the sternum and mastoid process?

Answer 29

Sternocleidomastoid

Question 30

The trapezius is part of what muscle?

Answer 30

Neck Muscles

Question 31

What is the 6 pack muscle called?

Answer 31

Rectus Abdominis

Question 32

What is the line down the middle of the abs?

Answer 32

Linea Alba

Question 33

What is the direction of the fibers in the external oblique?

Answer 33

Flows the same way you put your hands in your pockets

Question 34

What is the function of the external oblique?

Answer 34

Flexion with rotation

Question 35

Where is the internal oblique found?

Answer 35

Underneath/deeper of the external

Question 36

Where is the pectoralis major?

Answer 36

Located on chest, big and superficial

Question 37

Where is the pectoralis minor?

Answer 37

Underneath/deeper to the major

Question 38

What is the belly button called?

Answer 38

Umbilicus