MUSCULAR SYSTEM

Question 1

Functions of Muscular system

Answer 1

Functions:
1. Body movement
2. Maintenance of posture
3. Respiration
4. Production of body heat
5. Communication
6. Constriction of organs and vessels
7. Heartbeat

Question 2

Properties of Muscle

Answer 2

1. Contractility
2. Excitability
3. Extensibility
4. Elasticity

Question 3

3 types of muscle tissue

Answer 3

• Smooth muscle tissue
• Cardiac muscle tissue
• Skeletal muscle tissue

Question 4

Cardiomyocytes

Answer 4

Cardiac muscle cells

Question 5

short tapered cells, but no striations

Answer 5

Smooth muscle tissue

Question 6

Cells divide and converge, one nuclear per cell, striated, with intercalated disks

Answer 6

Cardiac muscle tissue

Question 7

Long multinucleate parallel cell, striations, (fine black lines running perpendicular to the fibers)

Answer 7

Skeletal muscle tissue

Question 8

Muscle in the bicep part

Answer 8

Biceps brachii

Question 9

Muscle in the hip bone

Answer 9

Gluteus maximus

Question 10

Muscle in the femur

Answer 10

Vastus lateralis

Question 11

Each one is rigged up with it’s own ________ to stimulate contraction, and its own _____ and ____

Answer 11

✓ Personal nerve
✓ artery and vein

Question 12

The entire muscle is wrapped in a layer of a dense
connective tissue called the

Answer 12

Epimysium

Question 13

Upon the muscle

Answer 13

Epimysium

Question 14

a layer of fibroud connective tissue

Answer 14

Perimysium

Question 15

(meaning “Around the muscle”).

Answer 15

Perimysium

Question 16

The third, innermost layer

Answer 16

Endomysium

Question 17

(“Within
the muscle”)

Answer 17

Endomysium

Question 18

surrounds and reinforces every
muscle fiber.

Answer 18

Endomysium

Question 19

_____ can allow proteins to bind or unbind with other stuff

Answer 19

Changing shapes

Question 20

gives
skeletal and cardiac muscle tissues that
STRIATED or STRIPED, appearance.

Answer 20

repeating pattern of overlapping
filaments in lots of sarcomeres

Question 21

are also players in
smooth and cardiac tissue, though the
control and organization of the filaments
and fibers is different.

Answer 21

ACTIN and MYOSIN

Question 22

describes
how during contraction the two ends of a
sarcomere come closer and the thin
filaments slide past the thick ones so actin
and myosin overlap more.

Answer 22

The sliding filament of muscle

Question 23

Is a king of molecular currency

Answer 23

ATP

Question 24

transmits AP deeply into the muscle fiber
to the vicinity of all separate myofibril.
- cause release of Ca ions in the immediate
vicinity of all the myofibrils (excitation-
contraction coupling)

Answer 24

ROLE OF T-TUBULES OF SARCOPLASMIC
RETICULUM

Question 25

ROLE OF T-TUBULES OF SARCOPLASMIC
RETICULUM

Answer 25

transmits AP deeply into the muscle fiber
to the vicinity of all separate myofibril.

• cause release of Ca ions in the immediate
  vicinity of all the myofibrils (excitation-
  contraction coupling)

Question 26

removes Ca ions from the
myofibrillar fluid.

Answer 26

Calcium pump

Question 27

heart has one T-
Tubule networks for each sarcomere,
located near each end of myosin filament.

Answer 27

Mammalian cardiac

Question 28

protein in the SR for
storage of calcium ions

Answer 28

CALCEQUESTRIAN

Question 29

When stuff binds to protein,
The proteins _______

Answer 29

Change shape

Question 30

TROPONIN
COMPLEX

Answer 30

TROPOMYOSIN

Question 31

Regulates the interaction between active
sites on actin and myosin

Answer 31

TROPOMYOSIN

Question 32

has inhibitory effect on muscle
contraction but could be inhibited by the
presence of calcium ions.

Answer 32

TROPOMYOSIN