What are the effectors of a reflex arc?

The effectors of a reflex arc are the muscles or glands that respond to the reflex. For example, in the knee-jerk reflex, the effector is the quadriceps muscle, which contracts to extend the knee. In the salivary reflex, the effectors are the salivary glands, which secrete saliva in response to the presence of food in the mouth.

Effectors are typically classified into two types:

* Skeletal muscles are attached to bones and are responsible for movement.

* Smooth muscles are found in the walls of organs and blood vessels and are responsible for controlling the flow of substances through the body.

In a reflex arc, the afferent neuron transmits sensory information from the receptor to the central nervous system, while the efferent neuron transmits motor information from the central nervous system to the effector. The effector then responds to the motor information by producing a specific action, such as contracting a muscle or secreting a hormone.

The effector is the final component of the reflex arc and is responsible for carrying out the reflex response.