©Jason MacConnell 2025 ALL RIGHTS RESERVED.
ANAT 100 Module 3 Exam Questions With
Correct Answers A+
What are muscles? - Answer✔Contractile organs; through muscle contraction, these organs
perform a number of important functions
What are the three types of muscle? - Answer✔skeletal, cardiac, smooth
Skeletal muscle - Answer✔Help human body move. Most skeletal muscle is attached to bones
via tendons.
Cardiac muscle - Answer✔Found in heart. Contract rhythmically, and is modulated by neural
activity and hormones.
Smooth Muscle - Answer✔controlled by nervous system or hormones. It may be either generally
inactive and then respond to stimulation, or it may be rhythmic.
How can muscles be categorized? - Answer✔morphology (form) or how they function.
What are the two morphologically categorized groups? - Answer✔Striated and Smooth muscle
straited muscle - Answer✔Striated muscle is marked by both light and dark bands (striations).
Striated muscle is found in heart and skeletal muscles.
How is striated muscle characterized? - Answer✔Is characterized by long muscle fibres (cells)
with multiple nuclei which are located peripherally for skeletal muscle or centrally for cardiac
muscle. Cardiac muscle also has intercalated discs: connect heart muscle cells to each other.
Smooth muscle - Answer✔Found in blood vessels, the digestive system, and other viscera. Each
smooth muscle fibre (cell) contains a single centrally located nucleus. Smooth muscle has
fusiform-shaped (spindle-like) cells without striations.
What are the two functionally categorized groups? - Answer✔Voluntary & Involuntary
Voluntary Muscle - Answer✔is consciously controlled in order to perform a specific function,
such as the muscle that move the skeleton for walking, reaching, talking, etc.
What type of muscle is voluntary? - Answer✔skeletal muscle
involuntary muscle - Answer✔involuntary muscle is not consciously controlled
1
, ©Jason MacConnell 2025 ALL RIGHTS RESERVED.
What type of muscle(s) is involuntary? - Answer✔smooth muscle and cardiac muscle
What are the two basic properties of muscle? - Answer✔excitability and contractility
Excitability - Answer✔Ability of muscle tissue to receive and respond to electrical signals from
nerves or stimulation from hormones
Contractility - Answer✔When a muscle cell is excited by a nerve or hormone, this causes the
muscle to shorten, resulting in contraction.
How many muscles are apart of the skeletal system and what are they composed of? -
Answer✔700 named muscles; skeletal muscle tissue, epithelial, connective, and nervous tissue.
What are most skeletal muscles attached to? - Answer✔Most skeletal muscles are attached to 2
bones across a joint, such that when contracted, the muscle brings parts of those 2 bones closer to
each other
What are the five functions of skeletal muscle? - Answer✔Produce movement, maintain posture
and stabilize joints, control excretion (elimination of urine and feces) and swallowing, produce
heat, support and protect internal organs.
What does skeletal muscle consist of? - Answer✔Skeletal muscle consists of muscle tissue and
connective tissue.
What does connective tissue surround? - Answer✔Connective tissue surrounds the muscle tissue
and attaches the ends of each muscle to bone.
What are the three layers connective tissue is categorized into? - Answer✔epimysium,
perimysium, and endomysium
Epimysium - Answer✔surrounds an entire muscle and is continuous with the tissue that becomes
the tendon.
Perimysium - Answer✔Layer of connective tissue surrounding a bundle of muscle fibres
(fascicle) within a muscle.
Endomysium - Answer✔surrounds the individual muscle cells (muscle fibres) within a muscle
bundle
What are the units of contraction for the muscle cell? - Answer✔myofilaments
What are myofilaments organized into? - Answer✔repeating structural units known as
sarcomeres
What happens when the sarcomeres are shortened. - Answer✔Contraction of muscle.
What does each unit consist of? - Answer✔actin (thin) and myosin (thick)
2
ANAT 100 Module 3 Exam Questions With
Correct Answers A+
What are muscles? - Answer✔Contractile organs; through muscle contraction, these organs
perform a number of important functions
What are the three types of muscle? - Answer✔skeletal, cardiac, smooth
Skeletal muscle - Answer✔Help human body move. Most skeletal muscle is attached to bones
via tendons.
Cardiac muscle - Answer✔Found in heart. Contract rhythmically, and is modulated by neural
activity and hormones.
Smooth Muscle - Answer✔controlled by nervous system or hormones. It may be either generally
inactive and then respond to stimulation, or it may be rhythmic.
How can muscles be categorized? - Answer✔morphology (form) or how they function.
What are the two morphologically categorized groups? - Answer✔Striated and Smooth muscle
straited muscle - Answer✔Striated muscle is marked by both light and dark bands (striations).
Striated muscle is found in heart and skeletal muscles.
How is striated muscle characterized? - Answer✔Is characterized by long muscle fibres (cells)
with multiple nuclei which are located peripherally for skeletal muscle or centrally for cardiac
muscle. Cardiac muscle also has intercalated discs: connect heart muscle cells to each other.
Smooth muscle - Answer✔Found in blood vessels, the digestive system, and other viscera. Each
smooth muscle fibre (cell) contains a single centrally located nucleus. Smooth muscle has
fusiform-shaped (spindle-like) cells without striations.
What are the two functionally categorized groups? - Answer✔Voluntary & Involuntary
Voluntary Muscle - Answer✔is consciously controlled in order to perform a specific function,
such as the muscle that move the skeleton for walking, reaching, talking, etc.
What type of muscle is voluntary? - Answer✔skeletal muscle
involuntary muscle - Answer✔involuntary muscle is not consciously controlled
1
, ©Jason MacConnell 2025 ALL RIGHTS RESERVED.
What type of muscle(s) is involuntary? - Answer✔smooth muscle and cardiac muscle
What are the two basic properties of muscle? - Answer✔excitability and contractility
Excitability - Answer✔Ability of muscle tissue to receive and respond to electrical signals from
nerves or stimulation from hormones
Contractility - Answer✔When a muscle cell is excited by a nerve or hormone, this causes the
muscle to shorten, resulting in contraction.
How many muscles are apart of the skeletal system and what are they composed of? -
Answer✔700 named muscles; skeletal muscle tissue, epithelial, connective, and nervous tissue.
What are most skeletal muscles attached to? - Answer✔Most skeletal muscles are attached to 2
bones across a joint, such that when contracted, the muscle brings parts of those 2 bones closer to
each other
What are the five functions of skeletal muscle? - Answer✔Produce movement, maintain posture
and stabilize joints, control excretion (elimination of urine and feces) and swallowing, produce
heat, support and protect internal organs.
What does skeletal muscle consist of? - Answer✔Skeletal muscle consists of muscle tissue and
connective tissue.
What does connective tissue surround? - Answer✔Connective tissue surrounds the muscle tissue
and attaches the ends of each muscle to bone.
What are the three layers connective tissue is categorized into? - Answer✔epimysium,
perimysium, and endomysium
Epimysium - Answer✔surrounds an entire muscle and is continuous with the tissue that becomes
the tendon.
Perimysium - Answer✔Layer of connective tissue surrounding a bundle of muscle fibres
(fascicle) within a muscle.
Endomysium - Answer✔surrounds the individual muscle cells (muscle fibres) within a muscle
bundle
What are the units of contraction for the muscle cell? - Answer✔myofilaments
What are myofilaments organized into? - Answer✔repeating structural units known as
sarcomeres
What happens when the sarcomeres are shortened. - Answer✔Contraction of muscle.
What does each unit consist of? - Answer✔actin (thin) and myosin (thick)
2
