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WorksheetsHBS 1.2.1 Causes of Contraction
Total questions: 25
Worksheet time: 17mins
What is the name for the connector that attaches muscle to bone?
ligament
tendon
joint
bones
Found attached to bones throughout the body
smooth
cardiac
skeletal
all
Found in the heart
smooth
cardiac
skeletal
all
Found in the walls of hollow organs; also called visceral
smooth
cardiac
skeletal
all
Which type of muscle is voluntary and striated?
Cardiac
Smooth
Skeletal
Which type of muscle is involuntary and striated?
Cardiac
Smooth
Skeletal
Which type of muscle is involuntary and non striated?
Cardiac
Smooth
Skeletal
A
B
C
D
Structure B is known as the thin filaments of the sarcomere, what is another name for the thin filaments?
myosin
actin
fascia
myofibril
Structure C is known as the thick filament of the sarcomere, it is also known as
myosin
actin
fascia
myofibrils
The unit between A and A is called
a sarcomere
The I band
the Z disc
fascia
Calcium binds to ___ on the actin filaments of muscle fibers.
troponin
tropomyosin
actin
myosin
Calcium is stored in the ___.
sarcoplasm
sarcolemma
sarcoplasmic reticulum
transverse tubules
___provides energy for muscle contraction and relaxation.
cAMP
ADP
ATP
M line
___slides inward during muscle contraction.
actin
myosin
Label the types of muscle tissue
Smooth
Skeletal
Cardiac
Label the parts of the thin filament
Actin
Tropomyosin
Troponin complex
What is being released from the axon which will help stimulate an action potential that travels along the sarcolemma and into the transvers (T) tubules?
Calcium
Estrogen
Epinephrine
Acetylcholine (neurotransmitter)
The binding of calcium to troponin signals tropomyosin to do what?
What creates the powerstroke in a muscle contraction?
Elongation of the sarcomere
Sliding of thin actin over the thick myosin filaments
After the powerstroke, the actin-myosin cross-bridge remains intact until an ____ binds to the myosin head. After this, the myosin will detach from actin.
