Quick Answer: What Is The Structural And Functional Unit Of Brain?

What is the structural similarities between all the respiratory organs?

These organs have been structured to allow easy diffusion of respiratory organs and are made up of thin walls to facilitate the exchange of these gases.

The respiratory organs like gills, skin, and lungs are all provided with a rich supply of blood for proper functioning and for transporting the respiratory gases..

Which type of nephron is most common?

Cortical nephronsCortical nephrons (the majority of nephrons) start high in the cortex and have a short loop of Henle which does not penetrate deeply into the medulla. Cortical nephrons can be subdivided into superficial cortical nephrons and midcortical nephrons.

What is Bowman’s capsule?

Bowman’s capsule is a part of the nephron that forms a cup-like sack surrounding the glomerulus. Bowman’s capsule encloses a space called “Bowman’s space,” which represents the beginning of the urinary space and is contiguous with the proximal convoluted tubule of the nephron.

What is the smallest structural and functional unit of the body?

cellThe cell is the smallest structural and functional unit of living organisms, which can exist on its own. Therefore, it is sometimes called the building block of life. Some organisms, such as bacteria or yeast, are unicellular—consisting only of a single cell—while others, for instance, mammalians, are multicellular.

What is the structural and functional unit of excretory system?

Nephron is the basic structural and functional unit of the kidney. The main function is to regulate water and soluble substances by filtering the blood, reabsorbing what is needed and excreting the rest as urine.

What do you call the basic functional units of the nervous system?

The basic unit of the nervous system is a nerve cell, or neuron. The human brain contains about 100 billion neurons.

What are the two types of nephrons?

There are two types of nephrons— cortical nephrons (85 percent), which are deep in the renal cortex, and juxtamedullary nephrons (15 percent), which lie in the renal cortex close to the renal medulla.

What are the structural and functional unit of lungs which lung is bigger in size?

The right lung is larger and contains three lobes. The left lung is smaller and contains only two lobes. The smaller left lung allows room for the heart, which is just left of the center of the chest. Lung tissue consists mainly of alveoli (Figure 16.2.

Is called the structural and functional unit of life?

The cell is called the structural and functional unit of life as all living organisms are made up of cells. … Furthermore, cells provide form and structure, process nutrients and convert it into useable energy. Multicellular organisms have specialized cells that perform specific functions.

What is the functional unit of brain?

It is also proposed that the basic functional unit in the brain is defined by how neurons communicate, and consists of two neurons and their interconnecting dendritic-synaptic-dendritic field. Since a functional unit is composed of two neurons, it requires two structural units to form a functional unit.

What is structural and functional unit of liver?

The hepatic lobule is the structural and functional unit of liver.

What is the functional unit of heart?

The middle layer, called the myocardium, is largely cardiac muscle. … Coordinated contractions of cardiac muscle, which are controlled by special cells called pacemaker cells, allow for your heart to pump blood as a single functional unit. Inside your heart are four chambers. The top two chambers are called atria.

What is the functional unit of the nervous system called?

These include nerve cells (or neurons) and glial cells (or glia). Neurons are the basic functional units of the nervous system, and they generate electrical signals called action potentials, which allow them to quickly transmit information over long distances.

How many nephrons are there?

Several studies have shown that total nephron (glomerular) number varies widely in normal human kidneys. Whereas the studies agree that average nephron number is approximately 900,000 to 1 million per kidney, numbers for individual kidneys range from approximately 200,000 to >2.5 million.

Is the structural and functional unit of life?

The cell (from Latin cella, meaning “small room”) is the basic structural, functional, and biological unit of all known organisms. A cell is the smallest unit of life. Cells are often called the “building blocks of life”.

What is the structural and functional unit of nervous system?

Neurons. Neurons, or nerve cell, are the main structural and functional units of the nervous system.

What is the structural and functional unit of kidney?

The nephron is the functional unit of the kidney. The glomerulus and convoluted tubules of the nephron are located in the cortex of the kidney, while the collecting ducts are located in the pyramids of the kidney’s medulla. … The renal tubule is a long, convoluted structure that emerges from the glomerulus.

What are the two basic functional units of the nervous system?

Although the nervous system is very complex, nervous tissue consists of just two basic types of nerve cells: neurons and glial cells. Neurons are the structural and functional units of the nervous system.

What is the smallest functional unit of the lungs?

terminal respiratory unitA terminal bronchiole defines the smallest functional unit of lung–the lung acinus (terminal respiratory unit).

What is the structural and functional unit of?

The cell is the basic structural and functional unit of life. Cells are independent, single-celled organisms that take in nutrients, excrete wastes, detect and respond to their environment, move, breathe, grow, and reproduce.

What are the structural and functional unit of lungs?

Alveoli is the structural and functional unit of lungs.