Muscular Anatomy Flashcards
Understand the different types of muscle fibers.
Cardiac- Involuntary, striated heart
Smooth- Nonstriated, involuntary, digestive system
Skeletal- multinucleated, striated. Voluntary muscles.
Muscle intervation for Trapezius
C2-4
Muscle intervation for Deltoid
C5-6
Muscle intervation for Bicept
C5-6
Muscle intervation for Tricept
C6-8
Muscle intervation for Thenar
C8-T1
Muscle intervation for Hypothenar
C8-T1
Muscle intervation for Intercostals
T2-6
Muscle intervation for Upper abs
T7-12
Muscle intervation for Lower abs
T7-12
Muscle intervation for Illiopsois
L1-4
Muscle intervation for Vastus Lateralis
L2-4
Muscle intervation for Bicept Femoris
L5-S2
Muscle intervation for Tibialis Anterior
L4-S1
Muscle intervation for Gastronemius
S1-2
Define Flexor
Muscle that brings connected bones closer together when it contracts.
Define extensor
Muscle that moves away from each other
Define ABDuctor
moves limbs away from the midline
Define ADDuctor
Moves towards the midline
Explain motor units and the differential size of motor units among muscles.
Motor unit is a neuron and all the fibers it innervates. Gross motor skills utilize large motor units that have many fibers. Fine motor skills utilize small motor units that have fewer fibers for more precise movement
