BIOD 151 EXAM 5 2026 PRACTICE TEST
QUESTIONS AND SOLUTIONS GUARANTEED
PASS
◉ Obicularis Oris - Action & Innervation. Answer: Action: mouth
closure: closes lips, protrudes lips forwards, presses lips against
teeth
Innervation: facial nerve CN VII
◉ Zygomaticus major/minor: Action & Innovation. Answer: Action:
pull corners of lips upward
Innervation: facial nerve CN VII
◉ Risorius: action & innervation. Answer: action: pulls the corners
of the mouth posteriorly (grin or grimace)
innervation: facial nerve CN VII
◉ Frontalis (occipitofrontailis): action & innervation. Answer:
action: raise eyebrows
innervation: facial nerve CN VII
◉ Buccinator: Action & Innervation. Answer: Action: compress
checks
,Innervation: facial nerve CN VII
◉ Masseter: Action & Innervation. Answer: Action: jaw closure
Innervation: trigeminal nerve CN V (mandibular branch)
◉ Temporalis: action & innervation. Answer: Action: elevates
mandible, closes jaw
Innervation: trigeminal nerve CN V (mandibular branch)
◉ Three Types of Muscle. Answer: Skeletal, smooth, cardiac
◉ What do Skeletal Muscles do?. Answer: provide movement under
conscious control. starts in brain with message sent to spinal cord
then the muscle.
◉ What do Peripheral Nerves do?. Answer: carry signal from CNS to
muscle destination
◉ What are motor actions?. Answer: messages from CNS to muscle
◉ What is sensory input (sensations)?. Answer: messages from
external environment to CNS
, ◉ What are examples of peripheral nerves?. Answer: spinal nerves,
upper trunk of brachial plexus and radial nerve
◉ What are tendons?. Answer: Connective tissue that connect
skeletal muscle to bones at each end. They are flexible, bend at joints
and cushion sudden movement.
◉ What are ligaments?. Answer: Connective tissue that connect bone
to bone. Provides stabilization.
◉ What is the Origin of a muscle?. Answer: bony site of attachment
that stays stationary during movement.
◉ What is the Insertion of a muscle?. Answer: the bony site of
attachment that is moved by the muscle contraction.
◉ What is the Action of a muscle?. Answer: the effect that is
produced by the contraction
◉ What is the Innervation of a muscle?. Answer: The peripheral
nerve that supplies a muscle with the message from the brain
QUESTIONS AND SOLUTIONS GUARANTEED
PASS
◉ Obicularis Oris - Action & Innervation. Answer: Action: mouth
closure: closes lips, protrudes lips forwards, presses lips against
teeth
Innervation: facial nerve CN VII
◉ Zygomaticus major/minor: Action & Innovation. Answer: Action:
pull corners of lips upward
Innervation: facial nerve CN VII
◉ Risorius: action & innervation. Answer: action: pulls the corners
of the mouth posteriorly (grin or grimace)
innervation: facial nerve CN VII
◉ Frontalis (occipitofrontailis): action & innervation. Answer:
action: raise eyebrows
innervation: facial nerve CN VII
◉ Buccinator: Action & Innervation. Answer: Action: compress
checks
,Innervation: facial nerve CN VII
◉ Masseter: Action & Innervation. Answer: Action: jaw closure
Innervation: trigeminal nerve CN V (mandibular branch)
◉ Temporalis: action & innervation. Answer: Action: elevates
mandible, closes jaw
Innervation: trigeminal nerve CN V (mandibular branch)
◉ Three Types of Muscle. Answer: Skeletal, smooth, cardiac
◉ What do Skeletal Muscles do?. Answer: provide movement under
conscious control. starts in brain with message sent to spinal cord
then the muscle.
◉ What do Peripheral Nerves do?. Answer: carry signal from CNS to
muscle destination
◉ What are motor actions?. Answer: messages from CNS to muscle
◉ What is sensory input (sensations)?. Answer: messages from
external environment to CNS
, ◉ What are examples of peripheral nerves?. Answer: spinal nerves,
upper trunk of brachial plexus and radial nerve
◉ What are tendons?. Answer: Connective tissue that connect
skeletal muscle to bones at each end. They are flexible, bend at joints
and cushion sudden movement.
◉ What are ligaments?. Answer: Connective tissue that connect bone
to bone. Provides stabilization.
◉ What is the Origin of a muscle?. Answer: bony site of attachment
that stays stationary during movement.
◉ What is the Insertion of a muscle?. Answer: the bony site of
attachment that is moved by the muscle contraction.
◉ What is the Action of a muscle?. Answer: the effect that is
produced by the contraction
◉ What is the Innervation of a muscle?. Answer: The peripheral
nerve that supplies a muscle with the message from the brain
