Back Myology Flashcards
What is a unipennate muscle
A pennate muscle with a tendon on one side and a muscle on the other
What is a bipennate muscle
A tendon with a pennate muscle on either side of it
What is a multipennate muscle
A pennate muscle with multi feathered muscle groups
What is the shape of a pennate muscle
Feather-like
What is the shape of a fusiform muscle
Spindle shaped with a thick central region and tapered ends
What is a bicipital muscle
A fusiform muscle with two heads
What is a tricipital muscle
A fusiform muscle with three heads
What is a quadracipital muscle
A fusiform muscle with four heads
What is a digastic muscle
A muscle with two bellies
What is a multiventral muscle
A muscle broken up by tendons
What is a multicaudal muscle
Muscles with multiple tendons
What is a serrated muscle
A muscle with a serrated edge
What is a circular muscle
Muscle surrounding an opening
What is a quadrate muscle
An equal sided muscle
What is an agonist
Muscle that activates a specific movement of the body
What is an antagonist
Muscle that opposes the action of the agonist
What is a synergist
Muscle that compliments the action of the agonist and prevent sthe movement of an intervening joint
What is a fixator
A muscle that stabilizes the joints while the distal end moves
Tendons connect what to what
Muscle to bone
Ligaments connect what to what
Bone to bone
What does the erector spinae group do
Maintain erect posture and extend the vertebral column and head
What is a sprain
An injury to the ligaments connecting bone to bone
What is a strain
An excessive stretch and sometimes tearing of muscle fibers
What transversospinalis group extends 5 or more spinal segments
Semispinalis group
What transversospinalis group extends 3 or 4 spinal segments and is best seen in the lumbar region
Multifidus M.
What transversospinalis group extends 2 spinal groups
Rotatores longus M.
What transversospinalis group extends to the adjacent spinal segment
Rotatores brevis M.
What is agenesis
Failure of a body part to form due to a lack of genetic signaling
What is Poland Syndrome
Agenesis of the pectoralis major and minor unilaterally
What happens in Poland Syndrome
The anterior axial fold is absent on the affected side and the nipple is more inferior than normal
