Effector organs are smooth muscle, cardiac muscle and glands that respond to nerve impulses from the central nervous system without conscious thought. They are part of the automatic, or involuntary, nervous system, along with receptors, afferent nerves and efferent nerves.Continue Reading
The digestive system, the heart, the lungs and the diaphragm are examples of effector organs. A living being does not have to use conscious thought to breathe, to digest food or to make its heart beat. Reflex arcs also make use of effectors. A reflex arc is the rapid and involuntary response to specific stimuli, such as the contraction of skeletal muscle to remove a hand from a hot surface.
The activation of effector organs is a relatively complex process. Sensory receptors react to a stimulus, or a change in the internal or external environment, and transform the stimulus into an electronic signal. This signal passes to a sensory neuron, which acts as an intermediary, bridging the gap between the sensory receptors, which are part of the peripheral nervous system, to the central nervous system. The sensory neuron transmits the signal to the central nervous system, where it undergoes processing. The central nervous system then sends a message, as a nerve impulse, to the corresponding motor neurons, which carry the impulse to the effector organ, which finally translates the nerve impulse into a response or movement.Learn more about Organs
If viewing a picture of the internal organs of a human lying in the supine position, the liver is the large, triangular organ in the upper quadrant of the body, to the direct upper left of the stomach and below the diaphragm. An average human liver weighs roughly three pounds and is split into two lobes connected by the coronary ligament.Full Answer >
Tissues that make up the lungs include bronchioles, epithelial cells, smooth muscle cells and alveoli, according to Centre of the Cell. Many of the lungs' tissues consist of several different cell types.Full Answer >
Afferent neurons are special nerve cells that are responsible for carrying nerve impulses from the receptors to the central nervous system. Efferent neurons carry nerve impulses from the central nervous system to the muscles and glands.Full Answer >
Neurogenic shock is a type of shock where there is insufficient blood flow throughout the body due to loss of signals from the sympathetic nervous system to the smooth muscle in vessel walls, according to MedicineNet. The blood vessels relax and dilate, resulting in a decrease in blood pressure.Full Answer >