Lab 7 The Muscular System BIO201L
Pre-Lab Questions
1. How do banding patterns change when a muscle contracts?
This is the muscle constriction that make the actin and myosin myofilaments to lower the
length and connect together. They have H and I zone which are eventually became bigger and
the the A band that is remain unchanged.
2. What is the difference between a muscle organ, a muscle fiber, myofibril and a
myofilament?
Muscle organ is consisting of every skeletal muscular system in the body. Every single organ or
muscle are all including of the skeletal muscle tissue, connective tissue and the nerve tissue.
Every muscle that binds outside by the connective tissue sheath is known as an epimysium.
Muscle tissue that has something in it then it’s called muscle fibers. Muscle fibers have single
muscle cell. Their main function is to control the physical forces within the body. Myofibril is
just a basis rod with the same number of amounts of the muscle cell. Muscles are containing of
tubular cells is myocytes. The long proteins that hold the myofibrils together are organized into
thick and thin filaments. Which also known as myofilaments.
3. Outline the molecular mechanism for skeletal muscle contraction. At what point is ATP used
and why?
When muscle contract, ATP that connect to myosin later to become ATP to ADP and PI. Calcium
and troponin that connect with each other to make tropomyosin, these let the myosin heads to
become a bridge. ADP and PI are given that make actin to go towards to center of the
sarcomere causing in a stroking power. ATP then release quickly to make a high beats of the
heart rate and also increase body temperature to allow body In a homeostasis.
4. Explain why rigor mortis occurs.
It happens when the partial of the muscle contract and cannot go to the relaxation states
because there is not enough of blood and oxygen that can supply throughout body.
Experiment 1: Tendons and Ligaments
Post-Lab Questions
1. Label the arrows in the slide images below based on your observations from the
experiment.
A- Chrondrocytes
B- Collagen
C- Collagen fibers
D- Skeletal muscle fiber
E- nuclei
F- collagen fibers
, Lab 7 The Muscular System BIO201L
Pre-Lab Questions
1. How do banding patterns change when a muscle contracts?
This is the muscle constriction that make the actin and myosin myofilaments to lower the
length and connect together. They have H and I zone which are eventually became bigger and
the the A band that is remain unchanged.
2. What is the difference between a muscle organ, a muscle fiber, myofibril and a
myofilament?
Muscle organ is consisting of every skeletal muscular system in the body. Every single organ or
muscle are all including of the skeletal muscle tissue, connective tissue and the nerve tissue.
Every muscle that binds outside by the connective tissue sheath is known as an epimysium.
Muscle tissue that has something in it then it’s called muscle fibers. Muscle fibers have single
muscle cell. Their main function is to control the physical forces within the body. Myofibril is
just a basis rod with the same number of amounts of the muscle cell. Muscles are containing of
tubular cells is myocytes. The long proteins that hold the myofibrils together are organized into
thick and thin filaments. Which also known as myofilaments.
3. Outline the molecular mechanism for skeletal muscle contraction. At what point is ATP used
and why?
When muscle contract, ATP that connect to myosin later to become ATP to ADP and PI. Calcium
and troponin that connect with each other to make tropomyosin, these let the myosin heads to
become a bridge. ADP and PI are given that make actin to go towards to center of the
sarcomere causing in a stroking power. ATP then release quickly to make a high beats of the
heart rate and also increase body temperature to allow body In a homeostasis.
4. Explain why rigor mortis occurs.
It happens when the partial of the muscle contract and cannot go to the relaxation states
because there is not enough of blood and oxygen that can supply throughout body.
Experiment 1: Tendons and Ligaments
Post-Lab Questions
1. Label the arrows in the slide images below based on your observations from the
experiment.
A- Chrondrocytes
B- Collagen
C- Collagen fibers
D- Skeletal muscle fiber
E- nuclei
F- collagen fibers
, Lab 7 The Muscular System BIO201L
