muscle basics

endomysium

-individual thin sleeve of loose connective tissue around each fiber

perimysium

-thicker layer of connective tissue surrounding individual muscle fascicles

epimedium

-fibrous shaft surrounding entire muscle

biceps brachii

-fusiform muscle

triangular muscle

-pertoralis muscle

multipenate muscle

-deltoid

prime mover

-produces most of the force of a movement

ex⭐️ -brachialis, sternocleidomtoid & iliopsoas

synergist

-aids the prime mover

-ex⭐️- latissimus dorsi, hamstrings, triceps & biceps

antagonist

-opposes the prime mover

-ex⭐️ - triceps brachii extends elbow

prime mover of neck flexion

-sternocleidomastoid

prime mover of elbow flexion

-brachialis

prime mover of hip flexion

-iliopsoas

origin

-proximal

insertion

-distal

biceps brachii actions

-elbow flexion

-forearm supination