Muscle Anatomy
What is the thicker region of the muscle in between the origin and insertion?
The Belly
What is the RMP of a muscle cell membrane?
-90mV
What is the action of the orbicularis oris?
close the mouth
pucker the lips
What are the symptoms for Carpal tunnel
pain (pins and needles) and motor loss in the wrist
Which muscle elevates the hyoid bone during
swallowing or speaking
Suprahyoid
What is the layer of dense irregular connective tissue that wraps the fascicles of the muscle?
Perimysium
During depolarization what ion enters the muscle cell?
Na+
Which muscle wrinkles the nose?
Procerus
is Lateral Epicondylitis axial or appendicular?
appendicular
What do rectus eye muscles originate from?
the common tendinous ring
What designates a sarcomere?
z-disks
What region of the sarcomere disappears when the muscle is fully contracted?
H-zones
What is the action of the Platysma
Tenses skin of neck and pulls the lower lip down
Which disease is where a newborn is born with shortened sternocleidomastoid?
Congenital Muscular Torticollis
Protrude the lower lip
(pouty face)
What are the invaginations of the sarcolemma called?
T-tubules
Which method of generating ATP in a muscle cell creates the most ATP?
Aerobic cellular respiration
Which muscle pulls eye superiorly and medially?
Superior rectus
What is the cause for the symptoms for Botulism?
The exocytosis of ACh is inhibited
What happens after the Ca2+ is released from the sarcoplasmic reticulum?
Ca2+ binds to troponin to instigate cross-bridge cycling
What is the connective tissue band that separate tendons from the muscles underneath it?
The retinaculum
What is the thinnest type of muscle fiber?
Slow oxidative
What muscle helps elevate first and second ribs during
forced inspiration?
Scalene muscles
What are the treatments for Plantar Fasciitis?
RICE (rest, ice, compress, elevate)
Stretching
Weight loss
PT
Give an example of a muscle with Convergent muscles fibers.
Pectoralis major
Latissimus dorsi
Trapezius