Muscle system Flashcard

Front

The contracting unit of a muscle cell is called ______?

Back

Sarcomere

Front

The thick myofilament of a sarcomere is called_______?

Back

Myosin

Front

The sarcoplasmic reticulum releases this ion, ______, which binds to troponin causing it to move so that myosin binding sites can be exposed.

Back

Calcium

Front

Number three is showing the thin myofilament called?

Back

Actin

Front

What is the connective tissue that surrounds / ensheaths the entire muscle?

Back

Epimysium

Front

Number 5 is called a _________, know as a discrete bundle of muscle cells?

Back

Fascicle

Front

A muscle cell is called ____?

Back

Muscle Fiber

Front

Which are the correct four functions of the muscle system? Options: send signals, produce heat, maintain posture and break down nutrients, Produce heat, transport oxygen, stabilize joints and make heat, Connect tissues, send signals, break down nutrients and maintain posture, Movement, heat production, maintain posture and stabilize joints

Back

Movement, heat production, maintain posture and stabilize joints

Front

This structure innervates (activates) muscle fibers.

Back

Motor Neuron

Front

Number 1 shows a _________.

Back

Sarcomere