Week 8 Muscle Lab

Question 1

Connective tissue specifically connecting a muscle to a bone

Answer 1

Tendon

Question 2

Essentially the muscle equivalent of a plasma membrane of the muscle cell

Answer 2

Sarcolemma

Question 3

Connective tissue surrounding fascicles (groups of muscle cells)

Answer 3

Perimysium

Question 4

Individual muscle cells with multiple nuclei & mitochondria

Answer 4

Muscle Fiber

Question 5

Specialized form of smooth endoplasmic reticulum found in muscle & stores Calcium

Answer 5

Sarcoplasmic Reticulum

Question 6

One subunit within a muscle fiber, made of many sarcomeres in a row.

Answer 6

Myofibril

Question 7

Flat, broad, tendon-like structure joining muscle to bone or muscle to muscle.

Answer 7

Aponeurosis

Question 8

Connective tissue surrounding each individual muscle fibers (cells)

Answer 8

Endomysium

Question 9

Portion of a muscle containing multiple muscle fibers (cells)

Answer 9

Fascicle

Question 10

Contractile element of muscle made of actin & myosin myofilaments (proteins)

Answer 10

sarcomere

Question 11

Connective tissue surrounding entire muscle & aids routing of nerves & blood

Answer 11

Epimysium

Question 12

Place in order from largest to smallest

muscle, sarcomere, myofibril,
muscle fiber, fascicle, myofilament

Answer 12

muscle
fascicle
muscle fiber
myofibril
sarcomere
myofilament

Question 13

4 special characteristics of muscles

Answer 13

Excitability
Contractility
Extensibility
Elasticity

Question 14

Excitability

Answer 14

able to receive and respond to stimuli

Question 15

Contractility

Answer 15

ability to shorten when stimulates

Question 16

Extensibility

Answer 16

ability to stretch

Question 17

Elasticity

Answer 17

ability to recoil to resting length

Question 18

Two examples of circular muscles

Answer 18

Orbicularis Oris
Orbicularis Oculi

Question 19

Tenses skin of palm of hand

Answer 19

Palmaris Longus

Question 20

Muscle creating tension in skin of neck

Answer 20

Platysma

Question 21

Allows power stroke as in hammering & makes a “V” across lower back

Answer 21

Latissimus Dorsi

Question 22

Slender muscle of inner thigh

Answer 22

gracilis

Question 23

Large calf muscle on posterior side

Answer 23

Gastrocnemius

Question 24

Muscle deep in cheek

Answer 24

Buccinator

Question 25

Muscle that facilitates bringing leg toward midline

Answer 25

Adductor Longus

Question 26

Vertical muscle on anterior surface of thigh

Answer 26

rectus femoris

Question 27

Allows flexion about the elbow & found on anterior surface of humerus

Answer 27

biceps brachii

Question 28

pronates the arm

Answer 28

pronator teres

Question 29

muscle for pushing or punching & looks like serrated edge of a blade

Answer 29

serratus anterior

Question 30

muscle aiding extension of toes

Answer 30

extensor digitorum longus

Question 31

muscle attaching sternum, clavicle, & mastoid process of skull

Answer 31

sternocleidomastoid

Question 32

muscle deep to the gastrocnemius

Answer 32

soleus

Question 33

separates thoracic cavity from abdominal cavity

Answer 33

diaphragm

Question 34

runs in transverse direction across torso & is a deep muscle

Answer 34

transverse abdominus

Question 35

allows shrugging of shoulders & muscle is diamond shaped on upper back

Answer 35

trapezius

Question 36

muscle on anterior surface of chin

Answer 36

mentalis

Question 37

runs vertically on anterior surface of torso

Answer 37

rectus abdominus

Question 38

muscle that starts at the lateral side of hip & attaches at medial side of knee

Answer 38

Sartorius

Question 39

muscle high on lateral thigh with long fascia connecting around the knee

Answer 39

tensor fascia latae

Question 40

two posterior thigh muscles, slim muscle on top, broader muscle below

Answer 40

Semitendinosus
Semimembranosus

Question 41

Extends & flares the fingers

Answer 41

Extensor digitorum

Question 42

Muscle aiding dorsiflexion

Answer 42

tibialis anterior