DAA: Exam II Questions and Answers
What muscles arise from the Paraxial mesoderm? - Answer-All skeletal muscle
What muscles arise from the lateral plate mesoderm? - Answer-Cardiac and smooth
When do striations appear in skeletal muscle? - Answer-End of the third month
T or F sensory neurons develop side by side with muscle. - Answer-True
What are the two divisions of myotome? - Answer-Epaxial, hypaxial
What muscles are epaxial and what innervate them? - Answer-Extensor muscles of neck and back,
dorsal Ramus of spinal cord
What muscles are hypaxial? - Answer-All other skeletal muscle
When do limbs appear? - Answer-Week 7
Where does a congenital diaphragmatic hernia generally occur? - Answer-On the left
,What is wryneck? - Answer-Torticoliis, damage to the sternocleidomastoid
Where do smooth and cardiac muscle generally arise from? - Answer-Splanchnic mesoderm
What does it mean that muscles are irritable? - Answer-They are excitable or respond to a stimulus
What is the difference between a tendon and aponeurosis? - Answer-Tendon is round and a
aponeurosis is flat
Why are skeletal muscles called striated? - Answer-Because they appear to have little bands
Muscles ________ and never _________ - Answer-Pull, push
Give an example of a fusiform muscle. - Answer-Biceps brachii
What neurotransmitter is used at the neuromuscular junction? - Answer-Acetylcholine
The receptors at the neuromuscular junction are ___________. - Answer-Nicatinic
Define a motor unit. - Answer-Nerve and the muscle it innervates
What is the difference between origin and insertion? - Answer-Origins are stationary during motion and
insertions move.They can flip flop
All fascias muscles are innervated by __________ except __________ which is innervated by ________ -
Answer-CN II, Levator palpebrea superioris, CN III
, T or F the epicranius frontalis pulls the eyebrows medial and down. - Answer-False
What muscle is known as the "Elvis" muscle? - Answer-Levator labii superioris
What muscle closes the eye? - Answer-Orbicularis occuli
What is the action of the zygomaticus muscle? - Answer-Smile
What innervates the muscles of mastication? - Answer-V3, mandibular branch of trigeminal nerve
What muscles elevate the mandible? - Answer-Temporalis, masseter, medial pterygoid
What is the formula for innervation of the extrinsic muscles of the eye? - Answer-SOIV, LRVI, all else III
Innervate on of tongue movement is __________, touch is _________ and taste is _______________ -
Answer-• CN XII
• V3
• VII, IX, & X
What is the OIA of the genioglossus m? - Answer-O: spine of mandible.
I: under tongue.
A: protract and depress
What muscles depress the mandible? - Answer-• Platysma
• Lateral pterygoid
• mylohyoid
What muscles arise from the Paraxial mesoderm? - Answer-All skeletal muscle
What muscles arise from the lateral plate mesoderm? - Answer-Cardiac and smooth
When do striations appear in skeletal muscle? - Answer-End of the third month
T or F sensory neurons develop side by side with muscle. - Answer-True
What are the two divisions of myotome? - Answer-Epaxial, hypaxial
What muscles are epaxial and what innervate them? - Answer-Extensor muscles of neck and back,
dorsal Ramus of spinal cord
What muscles are hypaxial? - Answer-All other skeletal muscle
When do limbs appear? - Answer-Week 7
Where does a congenital diaphragmatic hernia generally occur? - Answer-On the left
,What is wryneck? - Answer-Torticoliis, damage to the sternocleidomastoid
Where do smooth and cardiac muscle generally arise from? - Answer-Splanchnic mesoderm
What does it mean that muscles are irritable? - Answer-They are excitable or respond to a stimulus
What is the difference between a tendon and aponeurosis? - Answer-Tendon is round and a
aponeurosis is flat
Why are skeletal muscles called striated? - Answer-Because they appear to have little bands
Muscles ________ and never _________ - Answer-Pull, push
Give an example of a fusiform muscle. - Answer-Biceps brachii
What neurotransmitter is used at the neuromuscular junction? - Answer-Acetylcholine
The receptors at the neuromuscular junction are ___________. - Answer-Nicatinic
Define a motor unit. - Answer-Nerve and the muscle it innervates
What is the difference between origin and insertion? - Answer-Origins are stationary during motion and
insertions move.They can flip flop
All fascias muscles are innervated by __________ except __________ which is innervated by ________ -
Answer-CN II, Levator palpebrea superioris, CN III
, T or F the epicranius frontalis pulls the eyebrows medial and down. - Answer-False
What muscle is known as the "Elvis" muscle? - Answer-Levator labii superioris
What muscle closes the eye? - Answer-Orbicularis occuli
What is the action of the zygomaticus muscle? - Answer-Smile
What innervates the muscles of mastication? - Answer-V3, mandibular branch of trigeminal nerve
What muscles elevate the mandible? - Answer-Temporalis, masseter, medial pterygoid
What is the formula for innervation of the extrinsic muscles of the eye? - Answer-SOIV, LRVI, all else III
Innervate on of tongue movement is __________, touch is _________ and taste is _______________ -
Answer-• CN XII
• V3
• VII, IX, & X
What is the OIA of the genioglossus m? - Answer-O: spine of mandible.
I: under tongue.
A: protract and depress
What muscles depress the mandible? - Answer-• Platysma
• Lateral pterygoid
• mylohyoid
