Chapter 7 test Flashcards
Cardiac muscle makes up the bulk of the tissue of the
Heart
The muscle attachment to them or movable bone is called the
Insertion
The muscle attachment to the more stationary bone is called the
Origin
The protein that makes up thin myofilaments
Actin
Protein mix up the thick myofilaments
Myosin
The basic functional unit of contraction in a skeletal muscle
Sarco mere
Three functions of the skeletal system
Movement, posture, and heat production
The molecule that supplies energy for muscle contraction
ATP
Do you waste product produced when the muscle must switch to an energy supply and process it does not require oxygen
Lactic acid
A single motor neuron with all the muscle fibers innervates is called a
Motor unit
Minimal level of stimulation required to cause a muscle fiber to contract
Threshold stimulus
A type of muscle contraction that produces movement any joint and allow some muscle to shorten
Isotonic
A type of muscle contraction that does not produce movement and does not allow the muscle to shorten it does increase muscle tension
Isometric
A term describing movement of a body part away from the midline of the body
Abduction
A term used to describe the movement that is opposite of flexion
Extension
