BIOS 252 Exam 1 Study Guide 2026 | Chamberlain College
of Nursing | Latest Update | Graded A+
1. Describe the main differences between multi-unit and single-unit smooth
muscle tissues.
Multi-unit smooth muscle consists of individual fibers that contract
independently, while single-unit smooth muscle fibers contract as a
single unit due to gap junctions.
Both types of smooth muscle are striated and have similar contraction
mechanisms.
Multi-unit smooth muscle is voluntary, while single-unit smooth muscle
is involuntary.
Multi-unit smooth muscle is found only in the heart, while single-unit is
found in the digestive tract.
2. What is an important characteristic of multi-unit smooth muscle?
Acetylcholine is the only neurotransmitter to stimulate contraction
Numerous gap junctions connect myocytes
Contraction can be myogenic
Contraction is stimulated by calcium binding to troponin
Most smooth muscle cells act independently and are innervated by
a neuron
3. Identify the type of muscle tissue that is formed from multinucleated,
cylindrical cells.
smooth muscle
cardiac muscle
, skeletal muscle
4. What effect does cold have on smooth muscle according to the provided
information?
Cold has no effect on smooth muscles.
Smooth muscles contract under cold weather.
Smooth muscles relax under cold weather.
Cold only affects skeletal muscles.
5. Which type of muscle tissue can be excited spontaneously?
Cardiac muscle
Striated muscle
Smooth muscle
Skeletal muscle
6. Each skeletal muscle fiber is __ _.
multinucleated
trinucleated
uninucleated
binucleated
7. The fixed point on the lever is called?
bar
fulcrum
load
, resistance
8. What is the name for the site of muscle attachment that is moved upon
contraction?
Insertion
Origin
9. Which type of muscle tissue is striated, voluntary, and multinucleated?
all of the choices
smooth muscle
cardiac muscle
skeletal muscle
10. If a patient has a condition that affects the voluntary control of skeletal
muscles, which disorder might they be experiencing?
Cardiac arrest
Muscular dystrophy
Myasthenia gravis
Rhabdomyolysis
11. If a muscle fiber's sarcomeres are damaged, what effect would this have on
muscle function?
It would impair muscle contraction.
It would enhance muscle endurance.
It would have no effect on muscle function.
It would increase muscle flexibility.
, 12. What term describes the ability of muscles to shorten?
contractility
electrical excitability
extensibility
elasticity
13. In a physical therapy session, a patient is instructed to lift weights while
maintaining a steady position. Which type of muscle contraction is primarily
being utilized in this exercise?
Isotonic contraction
Isometric contraction
Treppe
Twitch
14. What is a function of smooth muscle?
It pumps blood to all parts of the body.
It moves bones.
It moves chyme through the digestive tract.
It helps maintain body temperature.
It contributes to posture.
15. What muscle tissue is striated, multinucleated, and voluntary?
Cardiac and skeletal
Smooth
Smooth and cardiac
of Nursing | Latest Update | Graded A+
1. Describe the main differences between multi-unit and single-unit smooth
muscle tissues.
Multi-unit smooth muscle consists of individual fibers that contract
independently, while single-unit smooth muscle fibers contract as a
single unit due to gap junctions.
Both types of smooth muscle are striated and have similar contraction
mechanisms.
Multi-unit smooth muscle is voluntary, while single-unit smooth muscle
is involuntary.
Multi-unit smooth muscle is found only in the heart, while single-unit is
found in the digestive tract.
2. What is an important characteristic of multi-unit smooth muscle?
Acetylcholine is the only neurotransmitter to stimulate contraction
Numerous gap junctions connect myocytes
Contraction can be myogenic
Contraction is stimulated by calcium binding to troponin
Most smooth muscle cells act independently and are innervated by
a neuron
3. Identify the type of muscle tissue that is formed from multinucleated,
cylindrical cells.
smooth muscle
cardiac muscle
, skeletal muscle
4. What effect does cold have on smooth muscle according to the provided
information?
Cold has no effect on smooth muscles.
Smooth muscles contract under cold weather.
Smooth muscles relax under cold weather.
Cold only affects skeletal muscles.
5. Which type of muscle tissue can be excited spontaneously?
Cardiac muscle
Striated muscle
Smooth muscle
Skeletal muscle
6. Each skeletal muscle fiber is __ _.
multinucleated
trinucleated
uninucleated
binucleated
7. The fixed point on the lever is called?
bar
fulcrum
load
, resistance
8. What is the name for the site of muscle attachment that is moved upon
contraction?
Insertion
Origin
9. Which type of muscle tissue is striated, voluntary, and multinucleated?
all of the choices
smooth muscle
cardiac muscle
skeletal muscle
10. If a patient has a condition that affects the voluntary control of skeletal
muscles, which disorder might they be experiencing?
Cardiac arrest
Muscular dystrophy
Myasthenia gravis
Rhabdomyolysis
11. If a muscle fiber's sarcomeres are damaged, what effect would this have on
muscle function?
It would impair muscle contraction.
It would enhance muscle endurance.
It would have no effect on muscle function.
It would increase muscle flexibility.
, 12. What term describes the ability of muscles to shorten?
contractility
electrical excitability
extensibility
elasticity
13. In a physical therapy session, a patient is instructed to lift weights while
maintaining a steady position. Which type of muscle contraction is primarily
being utilized in this exercise?
Isotonic contraction
Isometric contraction
Treppe
Twitch
14. What is a function of smooth muscle?
It pumps blood to all parts of the body.
It moves bones.
It moves chyme through the digestive tract.
It helps maintain body temperature.
It contributes to posture.
15. What muscle tissue is striated, multinucleated, and voluntary?
Cardiac and skeletal
Smooth
Smooth and cardiac
