Muscles Histology

Question 1

Skeletal muscle cell

Answer 1

Attached to bones
Voluntary
Striated

Question 2

Smooth muscle cell

Answer 2

Around visceral organs
Involuntary
No striated

Question 3

Scarcolemma

Answer 3

Cell membrane

Question 4

Sarcoplasm

Answer 4

Cell cytoplasm

Question 5

Multinucleate

Answer 5

Many nuclei

Question 6

Mitochondria

Answer 6

Many bc muscles need to make ATP

Question 7

Myofibrils

Answer 7

Rod-like organelles in Sarcoplasma

Question 8

Sarcoplasmic reticulum

Answer 8

Cell’s ER; wrapped around the Myofibrils

Question 9

Myofilaments

Answer 9

Thin actin

Thick myosin

Question 10

Fascicles

Answer 10

Many muscle fiber cells

Question 11

Endomysium

Answer 11

In muscle, surrounds each muscle cell or fiber

Question 12

Perimysium

Answer 12

Around each bundle (fascicle) of muscle cells

Question 13

Epimysium

Answer 13

Outter coating of the entire muscle

Question 14

Muscles connected to bones by

Answer 14

Tendons or aponeurosis

Question 15

Fascia

Answer 15

Connective tissue in the body like sausage casing .

Extremely strong

Question 16

Order of muscle cell

Answer 16

Myofilaments 
Myofibrils 
Muscle cell - muscle fiber 
Fascicle 
Muscle organ

Question 17

Muscle names based on :

Answer 17

Location 
Shape
Size
Direction of fibers 
Number of origins 
Location of attachments 
Actions

Question 18

How muscles in human body?

Answer 18

600

Question 19

Muscle Origin

Answer 19

The immovable bone the muscle is attached to

Bone that anchors muscle

Question 20

Muscle insertion

Answer 20

The bone that moves when the muscle contracts

Bone the muscle pulls on

Question 21

Biceps brachii

Answer 21

Insertion - ulna
Origin - scapula
Action - flexes forearm

Question 22

Deltoid

Answer 22

Insertion - deltoid tuberosity of humerus
Origin - clavicle & scapula
Action - abducts arm , flexes, extends and rotates arm

Question 23

Pectoralis major

Answer 23

Insertion - greater tubercle of humerus
Origin - clavicle, sternum and rib cartilages
Action - adducts and rotates arm

Question 24

Latissimus Doris

Answer 24

Insertion - intertubercular groove of humerus
Origin - lower vertebrae & posterior iliac crest laterally
Action - adducts & rotates arm

Question 25

Biceps femoris

Answer 25

Insertion - tibia Origin - Action - extends thigh

Question 26

Triceps brachii

Answer 26

Insertion - olecranon process Origin - scapula & posterior humerus Action - extends forearm

Question 27

Rectus femoris (quads)

Answer 27

Insertion - tibial tuberosity Origin - anterior inferior iliac spine Action - flexes thigh , extends leg

Question 28

Biceps femoris (hamstring)

Answer 28

Insertion - tibial tuberosity Origin - anterior inferior iliac spine Action - flexes thigh , extends leg

Question 29

Gastrocnemius

Answer 29

Insertion - Origin - Action -

Question 30

Tibialis anterior

Answer 30

Insertion - first metatarsal | Origin - tibia

Question 31

Sternocleidomastoid

Answer 31

Insertion - mastoid Origin - sternum and clavicle Action - flexes and turns head

Question 32

Rectus abdominus

Answer 32

Insertion - inferior area of sternum Origin - pubic area of hips Action - flexes or bends vertebral column

Question 33

Abduction

Answer 33

Away from body

Question 34

Addiction

Answer 34

Add to body

Question 35

Rotation

Answer 35

Move around its own axis can be lateral or medial

Question 36

Circumduction

Answer 36

Move distal wand in circle

Question 37

Flexion

Answer 37

Decreases angle of joint

Question 38

Extension

Answer 38

Increases angle of joint

Question 39

Antagonistic muscles perform opposite actions

Answer 39

- Biceps and triceps | - masseter and digastric

Question 40

Synergists muscle perform same action

Answer 40

Gastrocnemius muscle and soleus muscle

Question 41

Quadriceps

Answer 41

Rectus femoris Vastus lateralis Vastus medialis Vastus intermedius (underneath rectus)

Question 42

Hamstrings

Answer 42

Biceps femoris Semitendinosus Semimembranous

Question 43

Cardiac muscle cell

Answer 43

Heart Involuntary Striated

Question 44

Gastrocnemius

Answer 44

Origin - lateral and medial condyles of femur Insertion - clacaneus Action - plantar flexion

Question 45

Tibialis anterior

Answer 45

Origin - anterior tibia Insertion - superior tarsals Action - dorsiflexes