Portage Learning: A&P 1 Module 5 -
Muscular System
Name the 3 types of muscle tissue - correct answer skeletal, cardiac, smooth
skeletal muscle - correct answer have blood & nervous supply to provide
movement under conscious control
What does it mean that skeletal muscles are under conscious control? - correct
answer meaning that a person can consciously decide to use these muscles to
complete an action
Communication to coordinate movement starts where? - correct answer In the
brain with a message sent through the spinal cord & eventually attaches to a
muscle
What is included in the central nervous system? - correct answer brain and spinal
cord
The CNS (brain and spinal cord) connect to? - correct answer peripheral nervous
system
What do peripheral nerves do - correct answer carry signal from CNS
(brain+spinal cord) to muscle to enable movement
peripheral nerves - correct answer carry signal from CNS (brain+spinal cord) to
muscle to enable movement
examples of peripheral nerves - correct answer spinal nerves (cervical, thoracic,
and lumbar), the upper trunk of the brachial plexus, and the radial nerve.
Motor action - correct answer (CNS to Muscle) Message from CNS to a muscle is
called motor actions
Sensory Input (sensation) - correct answer (Environment to nerves to CNS)
Information sent from external environment by nerves to the central nervous
system
Central Nervous System (brain & spinal cord) connect to - correct answer
Peripheral Nervous system
Examples of peripheral nerves - correct answer 1. spinal nerves (lumbar,
thoracic, cervical)
,Portage Learning: A&P 1 Module 5 -
Muscular System
2. Upper trunk of the brachial plexus
3. Radial nerve
Peripheral Nervous System (PNS) - correct answer Carries information into and
out of the CNS
- carry communication from CNS to muscle AND carry info from environment to
CNS
describe the difference between tendons and ligaments - correct answer
tendons are connective tissue that attaches muscle to bone at the end.
Ligaments are connective tissue that connect bone to bone. Helping to stabilize
joints where bone meets.
Tendons - correct answer connective tissue that connects muscle to bone
Origin vs insertion of a muscle - correct answer Origin is a fixed stationary point;
insertion is the place that is moved during a muscle contraction
origin - correct answer muscles attach to non movable bone
insertion - correct answer muscles attach to movable bone
Muscle action - correct answer effect produced by a muscle contraction
- named for action they produce, e.g., flexor or extensor
- i.e. tricep is the primary extensor of the forearm
Innervation - correct answer a peripheral nerve that supplies muscle with a
message from brain
describe muscle action and innervation? - correct answer Action of muscle is
what effect is produced by the muscle's contraction
The innervation is the peripheral nerve that supplies a muscle with the message
from the brain.
,Portage Learning: A&P 1 Module 5 -
Muscular System
How many total cranial nerves - correct answer 12
Where do cranial nerves originate and control? - correct answer On the ventral
surface of brain
&
controll muscles function of several organs & glands
MUSCLES OF FACIAL EXPRESSION - correct answer
List all the muscles of the facial expression: (8) - correct answer BOOM - ZRFT
1. Obicularis Oculi
2. Obicularis Oris
3. Zygomaticus major/minor
4. Risorius
5. Frontalis (occipitofrontailis)
6. Buccinator
7. Masseter
8. Temporalis
Orbicularis Oculi - correct answer close eye; facial nerve CN VII
Orbicularis Oris - correct answer closes mouth, protrudes lips, presses lips to
teeth; facial nerve CN VII
Zygomaticus Major - correct answer Action: pulls corners of lips upward
Innervation: facial nerve CN VII
Inferior to zygomaticus minor
(cheek bone)
Zygomaticus Major - correct answer - Action: pulls corners of lips upward
, Portage Learning: A&P 1 Module 5 -
Muscular System
- Innervation: facial nerve CN VII
Inferior to zygomaticus minor
(cheek bone)
Risorius - correct answer - pulls the corners of the mouth posteriorly (grinning)
- cranial nerve CN VII
(attaches to corner of mouth)
frontalis (occipitofrontailis) - correct answer - action: raise eyebrows; wrinkle
forehead
- Cranial Nerve VII;
Buccinator - correct answer - compresses cheek;
- innervation: cranial nerve VII
- location: deep to zygomaticus
Masseter - correct answer - closes jaw;
- Trigeminal nerve (CN V, manibular branch)
(on side of jaw)
Temporalis - correct answer - Elevates mandible, closes jaw
- Trigeminal nerve (CN V, mandibular branch)
Lateral Flexion - correct answer aka side flexion, side bending of neck, moving
one of the ears to the shoulder
cervical flexion - correct answer moving the chin towards the chest
cervical extension - correct answer moving the chin up
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