Accessory joint movement & myology- Week 2 Flashcards
3 types of accessory joint movements
Spin, roll, glide (anterior, posterior, inferior, superior)
What accessory movement occurs at the knee joint with flexion
Rolling in the articular joint (tibia rolls posteriorly)
Proprioception
Perception or awareness of the position and movement of the body
How can proprioceptive information occur at joints
Nerve endings in the joint capsule, ligaments and hyaline cartilage that tells your brain what is occurring at the joint e.g. excess tension and where
3 types of muscle fibre
Skeletal striated muscle, cardiac striated muscle, smooth (unstriated) muscle
Which type of muscle fibre is under voluntary control
Skeletal striated muscle
Where are each types of muscle found in the body
Skeletal muscle are in skeletal muscle, cardiac is in the heart and adjacent portions of great vessels (aorta, vena cava), smooth muscle is found in blood vessels, iris, hair follicles of the skin
Skeletal muscle - superficial to deep
Tendon, fascia, Epimysium, perimysium, fascicle (bundle of muscle fiber), endomysium, sarcolemma, myofibril containing actin and myosin in the sarcomere
3 types of muscle contractions
Isometric, concentric, eccentric
Concentric contraction
Shortening of the muscle, force generated by muscle exceeds force of gravity
Eccentric contraction
Muscle relaxes; force generated becomes less than gravity (lengthening)
Isometric
Hold, equal resistance between muscle force and gravitational force
4 skeletal muscle roles
Agonist (prime mover), antagonist, synergist, stabiliser/fixator
Agonist
Main muscle(s) responsible for a movement
Antagonist
Muscle that opposes the action of the agonist muscle(s)
