Which of the following organ is part of central nervous system in humans? I. Heart II. Spinal cord
Only II
The human nervous system is broadly divided into the central nervous system (CNS) and the peripheral nervous system (PNS), which work together to sense, process and respond to information.
The central nervous system consists of only two organs, the brain and the spinal cord, which together receive sensory input, integrate it, and issue commands that control and coordinate the body's activities.
The spinal cord, given as statement II, is therefore a part of the CNS. It is a long tube of nervous tissue running through the vertebral column that serves as the main pathway relaying signals between the brain and the rest of the body and also mediates reflex actions.
The heart, given as statement I, is a muscular organ of the circulatory (cardiovascular) system whose role is to pump blood; it is not part of the nervous system. It is richly supplied by nerves of the autonomic (peripheral) system, but that connection does not make the heart itself a nervous-system organ.
So statement I is incorrect while statement II is correct, meaning only the spinal cord among the two listed qualifies as part of the CNS.
Hence, the correct answer is Only II.
What is the primary function of an artificial kidney for humans?
Which of the following organ can be donated while the donor is alive?
I. Part of a liver
II. Kidney
Deoxygenated blood from the body enters through which of the following chamber of the heart of humans?
The biological catalysts which help in the breakdown of food in humans known as _____.
What term is used for the pressure in the artery of human body during relaxation?
Involuntary actions like salivation and vomiting are regulated by which specific part of the hind-brain?
In which cell is the respiratory pigment haemoglobin found in humans?
What is the other name of the tissue fluid in human body?
Which gland controls the functioning of other endocrine glands?
The smallest and longest bones in the human body are ________ and _________, respectively.
Which is NOT a part of the urinary system?
Malaria and Kala Azar are caused by:
The human sex chromosomes determine the gender of the child, with XX being: