FOR MORE EXAMS
EMAIL:
BIO201L Lab 7 The Muscular
System questions with 100%
accurate solutions 2026
Lab 7 The Muscular System BIO201L
Student Name: Kris&e Vasquez
Access Code (located on the lid of your lab kit): Click here to
enter text.
Lab Report Format Expecta0ons
U"lize college level grammar and professional forma4ng when
comple"ng this worksheet.
Submissions without proper forma4ng, all required photos or sufficient
responses will be rejected. Prelab Ques>ons
1. How do banding pa>erns change when a muscle contracts?
The banding pa>erns change as sarcomeres shorten, narrowing
the H-zone and I-band while the A-band remains constant.
2. What is the difference between a muscle organ, a muscle fiber,
myofibril and a myofilament? A muscle organ is a complete
anatomical structure, a muscle fiber is an individual cell, a
myofibril is a thread-like structure in a fiber, and a myofilament
is a smaller protein structure within a myofibril.
3. Outline the molecular mechanism for skeletal muscle contrac&on.
At what point is ATP used and why?
,FOR MORE EXAMS
EMAIL:
Muscle contrac&on involves calcium release, myosin-ac&n
interac&on, and ATP u&liza&on during cross-bridge cycling,
calcium reuptake, and maintaining membrane poten&al.
Explain why rigor mor&s occurs.
4.
Rigor mor&s occurs due to ATP deple&on, preven&ng
detachment of myosin heads from ac&n, causing muscle s&ffness
aTer death.
EXPERIMENT 1: TENDONS AND LIGAMENTS Introduc>on
Ques>ons
1. How does the extracellular matrix of connec&ve &ssues
contribute to its func&on?
The extra cellular matrix helps to provide support and improves
the communica&on inside the &ssue in the process of healing. The
extra cellular matrix of connec&ve &ssues increases the elas&city
of the skin
2. Why are tendons and ligament &ssues difficult to heal?
theres lack of blood flow in these &ssues
, FOR MORE EXAMS
EMAIL:
Data and Observa>ons
1. Label the arrows in the slide images below based on your
observa&ons from the experiment.
A. Chondrocytes
B. Collagen
C. Collagen fibers
D. nuclei
E. Collagen fibers
EMAIL:
BIO201L Lab 7 The Muscular
System questions with 100%
accurate solutions 2026
Lab 7 The Muscular System BIO201L
Student Name: Kris&e Vasquez
Access Code (located on the lid of your lab kit): Click here to
enter text.
Lab Report Format Expecta0ons
U"lize college level grammar and professional forma4ng when
comple"ng this worksheet.
Submissions without proper forma4ng, all required photos or sufficient
responses will be rejected. Prelab Ques>ons
1. How do banding pa>erns change when a muscle contracts?
The banding pa>erns change as sarcomeres shorten, narrowing
the H-zone and I-band while the A-band remains constant.
2. What is the difference between a muscle organ, a muscle fiber,
myofibril and a myofilament? A muscle organ is a complete
anatomical structure, a muscle fiber is an individual cell, a
myofibril is a thread-like structure in a fiber, and a myofilament
is a smaller protein structure within a myofibril.
3. Outline the molecular mechanism for skeletal muscle contrac&on.
At what point is ATP used and why?
,FOR MORE EXAMS
EMAIL:
Muscle contrac&on involves calcium release, myosin-ac&n
interac&on, and ATP u&liza&on during cross-bridge cycling,
calcium reuptake, and maintaining membrane poten&al.
Explain why rigor mor&s occurs.
4.
Rigor mor&s occurs due to ATP deple&on, preven&ng
detachment of myosin heads from ac&n, causing muscle s&ffness
aTer death.
EXPERIMENT 1: TENDONS AND LIGAMENTS Introduc>on
Ques>ons
1. How does the extracellular matrix of connec&ve &ssues
contribute to its func&on?
The extra cellular matrix helps to provide support and improves
the communica&on inside the &ssue in the process of healing. The
extra cellular matrix of connec&ve &ssues increases the elas&city
of the skin
2. Why are tendons and ligament &ssues difficult to heal?
theres lack of blood flow in these &ssues
, FOR MORE EXAMS
EMAIL:
Data and Observa>ons
1. Label the arrows in the slide images below based on your
observa&ons from the experiment.
A. Chondrocytes
B. Collagen
C. Collagen fibers
D. nuclei
E. Collagen fibers
