Science [2 Mark Questions]

1. Pineal gland.
2. Pituitary gland.
3. Thyroid gland.
4. Thymus.

Control and coordination of functioning of various systems is under the direct control of nervous system. It is the nervous system which governs the way a particular organ or organ system has to work. This control is achieved by a complex network of neurons which carry signals in the form of electric impulses; to and from the brain.The hormonal system, on the other hand, coordinates the functioning of nervous system. The hormonal system has somewhat indirect control on various functions. It tells a system to either slow down or pace; according to the situation.
Nervous and hormonal systems are complementary to each other. Thus, it can be said that nervous and hormonal system together perform the function of control and coordination in human beings.

1.  

1. Sensory neuron.
2. Spinal cord (CNS).
3. Mortor neuron.
4. Effector (muscle in arm)

2. Name — Reflex arc.

Direction:

1. Receptor (hand) to spinal cord through sensory neuron,
2. Sensory neuron to motor neuron through Spinal cord to effector through motor neuron.