Muscular System Flashcards
_______ provide movement of the body under the direction of the nervous system
Muscles
Usually originate on one bone and insert on another.
_________ causes the insertion bone to move while the origin bone serves as an anchor
Muscles contraction
The _______ of muscles is the major target of embalming chemicals
protein
Beginning _______ hours after death, muscles contract naturally in a condition known as rigor mortis.
3-6 hours
As the dead body is no longer generating the energy to allow muscles to relax, they will remain contracted until about ________ after death.
36 hours
_________ is more difficult to embalm than the relaxed muscle
Contracted muscle
The embalmer must manually stretch the muscles to get them relaxed and ready for embalming.
This process is called ________ rigor mortis.
“relieving” rigor mortis
Most major _______ used for embalming lie beneath one or more muscles
arteries
Knowledge of muscles location is important when trying to _____ and ______ arteries and veins.
locate and raise
- Origin of this shoulder muscle is the lateral third of the clavicle and parts of scapula
- The insertion is on the upper humerus
- Axillary artery and vein lie in the groove just below lateral edge of this muscle
Deltoid muscles
- A major muscle of the upper arm
- It originates on the humerus and inserts on the radius
- The brachial artery lies just below this muscle on the medial side of the arm
Biceps
- This muscles arises on the anterior humerus and inserts on the ulna
- It is a main flexor of the elbow joint
- The division of brachial artery into radial and ulnar arteries is found near its insertion
Brachialis
- The muscles of the hand
- Found on the palmar surface and are important in interdigital hypodermic injection
Thenar muscles
- This powerful muscle of the anterior extends from the hip bone to the knee
- Femoral artery and vein lie between the posterior edge of this muscle on the medial side of the leg and the sartorius muscle.
Rectus femoris
- A long narrow muscle that originates on the hip bone and inserts on the medial knee
- It passes over the medial edge of rectus femoris
Sartorius
- The big muscle group of the lower leg
- It has 2 heads of origin from the femur
- Provides fullness to the calf and the middle of the leg
- This is used to locate the anterior and posterior tibial arteries and veins
Gastrocnemius muscle
- This muscles group originates along the whole length of the iliac crest of the pelvis and the anterior superior spine
- Great extensor of the upper leg
Gluteals (buttocks)
Often the first muscle to decompose
Gluteals (buttocks)
Pressure from body weight on the gluteals may limit the circulation of embalming solution.
How can you minimize this problem?
Placing a 4-6 cm thick support under the lower back to relieve pressure on the gluteals
What is the importance of the Muscular System in embalming?
- Muscles serves as a landmark to locate major arteries and veins
- Relieving rigor mortis
- The protein of muscles is a major target of embalming chemicals
