Recent questions tagged human-organ-system

Description : How stones are formed in the kidney and how can these be removed?

Last Answer : Sometimes kidneys cannot work properly to remove salt from blood. In such situation, the salts gather in kidneys and form stones. Stones can be removed in three ways I. By drinking water II. Lithotripsy III. shockwaves

Description : Name any two waste materials produced by the human body

Last Answer : 1: Urine 2: Feces

Description : What is kidney transplant?

Last Answer : In this method a kidney donated by some healthy person is grafted in the body of the patient. The donar of kidney may be blood relative or any other close relative.

Description : What is dialyzer?

Last Answer : Clearing of blood by artificial methods is called dialysis. It is done by a machine called dialyzer.

Description : What is Hypertension?

Last Answer : It is a state of high blood pressure in the body. 

Description : Define diabetes 

Last Answer : Diabetes mellitus is disease in which sugar level increases in the blood.

Description : What is renal failure?

Last Answer : It is a complete or partial failure of kidneys to work. The main cause of renal failure are I. long term infection II. Diabetes mellitus III. Hypertension

Description : Define Reflex arc. 

Last Answer : The inter neuron transmit the impulse to motor neuron. They carried the impulse to muscles. The pathway of nerve impulse that complete a reflex action is called reflex arc. It consists of receptor, a sensory neuron, an inter neuron, a motor neuron and effectors.

Description : Define reflex action.

Last Answer : An immediate and involuntary response to a stimulus is called reflex action. Quick pulling of hand just after touching the hot object is a common example of reflex action. Explanation When we touch ... arc. It consists of receptor, a sensory neuron, an inter neuron, a motor neuron and effectors.

Description : Describe structure of nephron

Last Answer : It is the functional unit of kidneys. It consists of two main parts I. Renal corpuscle II. Renal tubule These are the tubules where urine is formed. There are over one million ... and is called Loop of Henle. The last part of the renal tubule is again coiled called distal tubule.

Description : Write a note on internal structure of kidneys

Last Answer : Each kidney is divided into three regions 1. Renal cortex It is the outer most region of kidney 2. Renal medulla and renal pyramids Renal medulla is the middle regions which is divided into conical ... It is the inner area where urine is drained. The urine from renal pelvis moves into ureter.

Description : Describe the main parts of excretory system in man.

Last Answer : It consists of one pair of kidneys and associated structure. i.e. two ureter, a urinary bladder and urethra. 1. Kidneys Human body has two dark brown bean shaped kidneys in the abdominal ... A fine tube through which urine is released from urinary bladder to the outside is called urethra.

Description : Describe peripheral nervous system (PNS).

Last Answer : PNS includes a network of nerves connecting the central system to whole body. The nerves which arise from brain are called cranial nerves. The nerves which arise from spinal cord are called spinal nerves. There are 12 pairs of cranial nerves and 31 pairs of spinal nerves in human body.

Description : Explain central nervous system.

Last Answer : CNS acts as a control Centre of the whole nervous system. It contains brain and spinal cord. Brain Human brain is enclosed in a bony skull called cranium. It divided into following ... between brain and different body parts. It also controls some reflex actions and some other involuntary actions.

Description : Skin is considered as excretory organ. Why?

Last Answer : Because some extra salts are also removed through skin during perspiration.

Description : Write the function of the followings 1. Forebrain 2. Hindbrain

Last Answer : 1. Forebrain It is the largest part of the brain. It consists of three main parts I. Cerebrum II. Thalamus III. Hypothalamus Cerebrum is the topmost and the largest part of ... These are the tubules where urine is formed. There are over one million nephrons in each kidney. 

Description : Write the names of main parts of the followings 1. Forebrain 2. Hindbrain

Last Answer : 1. Forebrain It consists of three main parts I. Cerebrum II. Thalamus III. Hypothalamus 2. Hindbrain It consists of three main parts I. Cerebellum II. Pons III. Medulla oblongata 3. Neuron It ... Dendrites III. Axon 4. Nephron It consists of two main parts I. Renal corpuscle II. Renal tubule

Description : How many types of neurons are there?

Last Answer : There are three types of neurons on the basis of functions. I. Sensory neurons II. Motor neurons III. Inter neurons 1. Sensory neurons It carries nerve impulses from sense organs (ears, eyes, skin, ... . 3. Inter neurons These are present in CNS. They form a link between sensory and motor neurons.

Description : Define Nerve.

Last Answer : It is an enclosed, cable like bundle of axons present side by side in a common sheath. Nerve conveys messages carried by the individual neurons from one body part to another.

Description : What is Axon?

Last Answer : A long projection of the cell body that conducts messages away from the cell body is called axon.

Description : Define Dendrites.

Last Answer : A fine projection of the cell body that receives messages is called dendrites.

Description : Define cell body.

Last Answer : The part of neuron containing nucleus and most of the cytoplasm is called cell body.

Description : Define Nerve impulses

Last Answer : Neurons carry messages in the form of electro-chemical waves called nerve impulses.

Description : Define Neuron or Nerve Cell.

Last Answer : Neuron or nerve cell is the basic structure and functional unit of the nervous system. All parts of the nervous system are made up of neurons.

Description : What is PNS?

Last Answer : PNS means peripheral nervous system that includes a network of nerves connecting the central system to whole body.

Description : What is CNS?

Last Answer : CNS means central nervous system that includes brain and spinal cord.

Description : Define nervous system

Last Answer : The organ system in our body that carries messages from one part of the body to another part and coordinates body functions is called nervous system.