514-7 Muscle System Flashcards
How many skeletal muscles are there in a human?
About 600
What is the golden book of muscle anatomy?
Nomina Anatomica
What are the three types of CT associated with muscle?
Epimysium, Perimysium, Endomysium
What are the two layers that BLEND in the epimysium and are nearly impossible to distinguish between during dissection?
Deep Fascia and Superficial Fascia(aka HYPOdermis)
What is the name for a bundle of muscle cells surrounded by perimysium?
A Fascicle
What is a thin layer of areolar CT that surrounds each muscle cell (muscle fiber)?
Endomysium
Does fascia stretch?
NO! Snakebite example…
Which portion of the muscle is attached to the fixed end? Origin or Insertion? Which is attached to the more mobile end?
Origin:Stationary Insertion:Mobile
What type of muscle attachment merges the muscle with the periosteum of bone?
Tendon
Which type of muscle attachment is a flat, sheet like tendon that connects muscle to collagen fibers of the dermis?
APO-Neuro-ses
What are the five muscle shapes?
1.Fusiform 2. Convergent 3. Parallel 4. Circular 5. Pennate
What does the fixator do?
Prevents movement of the bone the prime mover (agonist) is attached to.
What type of neurons relay a message from the finger to the CNS? Give me 2 descriptions!
Afferent, Pseudo-unipolar
What type of neuron relays information from the CNS to skeletal muscle? 3 descriptions
Efferent, somatic, multi-polar
What type of neuron relays information from the CNS to Glands, smooth muscle, and cardiac muscle? 3 descriptions.
Efferent, autonomic, multi-polar
