Biod 151 Module 5 problem set Questions
& Answers | Grade A | 100% Correct -
Portage Learning
Name the three types of muscle tissue found in the body. - ANSWER
Cardiac, smooth, skeletal
What does it mean that skeletal muscles are under conscious control? -
ANSWER A person can consciously decide to use their muscles to
complete an action
What structures are included in the central nervous system? - ANSWER
brain and spinal cord
Describe a motor action vs. sensory input in terms of the nervous system. -
ANSWER Motor actions is when the central nervous system sends an
impulse to the muscle. Sensory input is when the nerves carry information from the
external environment.
True or false: The brachial plexus supplies nerves to the lower extremities. -
ANSWER false
,Describe the difference between tendons and ligaments. - ANSWER
Tendons connect to the skeletal muscle and ligaments conect bone to bone
stabilizes the joints where bones meet.
Describe the meaning of muscle origin and insertion. - ANSWER The
origin is the bony site of attachment that is stationary during the movement. The
insertion is the bony site of attachment that is moved by the muscle contraction.
The origin and insertion can be reversed in different types of movements.
Describe the meaning of muscle action and innervation. - ANSWER
The action of the muscle is movement of the body caused by contraction of the
muscles Innervation is providing movement to the muscles fibers for a specific
muscle.
Practice: Muscles of Facial Expression
*NOTE* This is not an exhaustive list. All the muscles in the module need to be
learned for the exam. meaning of muscle action and innervation. - ANSWER
Identify the muscle indicated below. Also name its action and innervation. -
ANSWER Orbicularis Oculi
action: eye closure
innervation: facial nerve (CN VII)
( The picture in the exam is pointing to around the eye)
Identify the muscle indicated below. Also name its action and innervation. -
ANSWER Orbicularis Oris
action: mouth closure: closes lines, protrudes lips forward, presses lips against
teeth
innervation: facial nerve (CN VII)
(On the exam the arrow is point around the mouth)
, Identify the muscle indicated below. Also name its action and innervation. -
ANSWER Risorius
action: pulls the corners of the mouth posteriorly (grin or grimace)
innervation: facial nerve (CN VII)
(on the exam the arrow is point to a small muscle near the mouth on the cheek)
Identify the muscle indicated below. Also name its action and innervation. -
ANSWER Frontalis ( occipitpfrontailis)
action: raise eyebrows
innervation: facial nerve (CN VII)
(on the exam the arrow is point to the forehead)
Identify the muscle indicated below. Also name its action and innervation. -
ANSWER Temporalis
action: jaw closure
innervation: trigeminal nerve (CN V, mandibular branch)
Identify the muscle below. Also name its action and innervation. - ANSWER
Zygomaticus major
action: pulls corners of lips upward
innervation: facial nerve (CN VII)
Identify the muscle below. Also name its action and innervation. - ANSWER
Buccinator
action: compress cheeks
innervation: facial nerve (CN VII)
& Answers | Grade A | 100% Correct -
Portage Learning
Name the three types of muscle tissue found in the body. - ANSWER
Cardiac, smooth, skeletal
What does it mean that skeletal muscles are under conscious control? -
ANSWER A person can consciously decide to use their muscles to
complete an action
What structures are included in the central nervous system? - ANSWER
brain and spinal cord
Describe a motor action vs. sensory input in terms of the nervous system. -
ANSWER Motor actions is when the central nervous system sends an
impulse to the muscle. Sensory input is when the nerves carry information from the
external environment.
True or false: The brachial plexus supplies nerves to the lower extremities. -
ANSWER false
,Describe the difference between tendons and ligaments. - ANSWER
Tendons connect to the skeletal muscle and ligaments conect bone to bone
stabilizes the joints where bones meet.
Describe the meaning of muscle origin and insertion. - ANSWER The
origin is the bony site of attachment that is stationary during the movement. The
insertion is the bony site of attachment that is moved by the muscle contraction.
The origin and insertion can be reversed in different types of movements.
Describe the meaning of muscle action and innervation. - ANSWER
The action of the muscle is movement of the body caused by contraction of the
muscles Innervation is providing movement to the muscles fibers for a specific
muscle.
Practice: Muscles of Facial Expression
*NOTE* This is not an exhaustive list. All the muscles in the module need to be
learned for the exam. meaning of muscle action and innervation. - ANSWER
Identify the muscle indicated below. Also name its action and innervation. -
ANSWER Orbicularis Oculi
action: eye closure
innervation: facial nerve (CN VII)
( The picture in the exam is pointing to around the eye)
Identify the muscle indicated below. Also name its action and innervation. -
ANSWER Orbicularis Oris
action: mouth closure: closes lines, protrudes lips forward, presses lips against
teeth
innervation: facial nerve (CN VII)
(On the exam the arrow is point around the mouth)
, Identify the muscle indicated below. Also name its action and innervation. -
ANSWER Risorius
action: pulls the corners of the mouth posteriorly (grin or grimace)
innervation: facial nerve (CN VII)
(on the exam the arrow is point to a small muscle near the mouth on the cheek)
Identify the muscle indicated below. Also name its action and innervation. -
ANSWER Frontalis ( occipitpfrontailis)
action: raise eyebrows
innervation: facial nerve (CN VII)
(on the exam the arrow is point to the forehead)
Identify the muscle indicated below. Also name its action and innervation. -
ANSWER Temporalis
action: jaw closure
innervation: trigeminal nerve (CN V, mandibular branch)
Identify the muscle below. Also name its action and innervation. - ANSWER
Zygomaticus major
action: pulls corners of lips upward
innervation: facial nerve (CN VII)
Identify the muscle below. Also name its action and innervation. - ANSWER
Buccinator
action: compress cheeks
innervation: facial nerve (CN VII)
