Skeletal Muscle

Question 1

What is the skeletal muscles function?

Answer 1

1. Movement
2. Heat protection
3. Posture and body support

Question 2

What are the characteristics of skeletal muscle?

Answer 2

Excitability
Contractility
Extensibility
Elasticity

Question 3

A fibrous cord or band that connects a muscle to its bony attachment.

Answer 3

Tendons

Question 4

Broad flat tendinous sheath, attaches muscle to bone.

Answer 4

Aponeurosis

Question 5

Connective tissue that surrounds muscle fibers.

Answer 5

Endomysium

Question 6

Connective tissue that surrounds fasciculi.

Answer 6

Perimysium

Question 7

Connective tissue that surrounds entire muscle.

Answer 7

Epimysium

Question 8

Connective tissue that covers muscle and attaches to skin.

Answer 8

Fascia

Question 9

4 Important things to know about skeletal muscles.

Answer 9

1. Skeletal muscles are called voluntary muscles.
2. Skeletal muscles are striated /under the microscope
3. Skeletal muscles produce movement by shortening/ pull and never push.
4. The fleshly part of the skeletal muscle is called the muscle belly.

Question 10

The primary mover of a joint.

Answer 10

Agonist

Question 11

Actions opposite of agonist.

Answer 11

Antagonist

Question 12

Muscles work together

Answer 12

Synergist

Question 13

Steady the proximal portions of a limb while movement is occurring in the distal part

Answer 13

Fixators

Question 14

Flex a joint.

Answer 14

Flexors

Question 15

Extend a joint.

Answer 15

Extensors

Question 16

Muscle Architecture: With parallel fibers, often associated with an aponeurosis, external oblique.

Answer 16

Flat

Question 17

Muscle Architecture: Strap-like, good endurance, not strong,

Answer 17

Parallel.

Question 18

Muscle Architecture: Has a spindle shape, round and thick and tapers at the ends, biceps brachii.

Answer 18

Fusiform muscle

Question 19

Muscle Architecture: Close body openings, orbicularis oris.

Answer 19

Sphincter

Question 20

Muscle architecture: fibers converge on a tendon. 3 types, unipennate, bipennate and multipennate.

Answer 20

Pennate

Question 21

General Somatic Efferent

Answer 21

Motor neuron

Question 22

General Somatic Afferent

Answer 22

Sensory neuron

Question 23

A single motor neuron and all of the muscle fibers it innervates.

Answer 23

Motor Units

Question 24

Usually the proximal end of the muscle, the less movable of the two points of attachment of a muscle, that end which remains fixed or stationary.

Answer 24

Origin of a muscle

Question 25

Usually the distal end of the muscle, the movable end, that end which moves in relation to the rest of the skeleton.

Answer 25

Insertion of a muscle

Question 26

Wrinkles the forehead

Answer 26

Epicranius

Question 27

Closes the eye

Answer 27

Orbicularis

Question 28

Widens the nostrils

Answer 28

Nasalis

Question 29

Draws angle of mouth laterally

Answer 29

Risorius

Question 30

Pucker muscle

Answer 30

Orbicularis

Question 31

Elvis muscle

Answer 31

Levator labii superioris

Question 32

Smile muscle

Answer 32

Zygomaticus

Question 33

Frown muscle

Answer 33

Depressor Anguli oris

Question 34

Pout muscle

Answer 34

Depressor labii inferioris

Question 35

Raises upper lid

Answer 35

Levator palpebrae superioris

Question 36

Fleshy base of the thumb, formed by 3 muscles that move the thumb all innervated by the median nerve.

Answer 36

Thenar eminence

Question 37

The elongated fleshy bulge at the base of the little finger, formed by 3 muscles that move the little finger all innervated by the ulnar nerve

Answer 37

Hypothenar eminence

Question 38

What is this shape called?

Answer 38

Fusiform

Question 39

What is this muscle shape?

Answer 39

Parallel

Question 40

What is this muscle shape called?

Answer 40

Convergent

Question 41

What is this muscle shape called?

Answer 41

Unipennate

Question 42

What is this muscle shaped called?

Answer 42

Bipennate

Question 43

What is this muscle shape called?

Answer 43

Multipennate

Question 44

What is this muscle shape called?

Answer 44

Cellular