Anatomy and Physiology: Muscles and Nerves Flashcards
moving a limb away from the center of the body
abduction
a neurotransmitter widely found in body tissues; it primary function is to mediate synaptic activity of the nervous system and skeletal muscles
acetylcholine (ACh)
moving a limb toward the center of the body
adduction
the flaring cartilaginous expansion on each side of the nares
ala
something that opposes the action of another
antagonist
front
anterior
strong, thick, and flat connective tissue that serves as fascia to bind muscles together or as tendon to attach muscle to bone
aponeurosis
the muscle of the upper arm; its name means “two heads” because it originates from two heads attached to the scapula and the humerus
biceps brachii
important muscle for the arm’s ability to flex at the elbow
brachialis
pertaining to the heart
cardiac
movement of a limb or extremity in which the distal end describes a circle while the proximal end remains fixed
circumduction
the ability to transmit sound, heat, light, or energy
conductivity
away from, or farthest from, a point of origin or the midline or center
distal
upward or backward flexion of a body part
dorsiflexion
the ability to change length, size, and shape, and then returning to the original form; both muscle and skin have this property
elasticity
the connective tissue sheath that surrounds skeletal muscle
epimysium
a set of three muscles that run along either side of the spinal column
erector spinae
turning outward or inside out, as in turning the foot outward at the ankle
eversion
the property of a cell that enables it to react to a stimulus
excitibility
moving a joint in such a way as to increase the angle of the joint
extension
a thin long muscle that runs the length of the side of the tibialis anterior muscle
extensor digitorium longus
muscles responsible for the movement of the vertebrae and rotation of the torso
external obliques
a fibrous connective membrane that covers, supports and separates muscles; varies in thickness and density and in the amounts of fat, collagenous fiber, elastic fiber, and tissue fluid it contains
fascia
a movement allowed by certain joints that decreases the angle between two adjoining bones, such as bending the elbow
flexion
a fold of mucous membrane that connects two parts, as between the lips and the gums, one being more or less moveable; aka frenum
frenulum