What is the role of nephron in urine formation?
The nephrons of the kidneys process blood and create urine through a process of filtration, reabsorption, and secretion. Urine is about 95% water and 5% waste products. Nitrogenous wastes excreted in urine include urea, creatinine, ammonia, and uric acid.
Why is the nephron the functional unit of the kidney?
A nephron is the basic structural and functional unit of the kidneys that regulates water and soluble substances in the blood by filtering the blood, reabsorbing what is needed, and excreting the rest as urine. Its function is vital for homeostasis of blood volume, blood pressure, and plasma osmolarity.
What is the functional unit for urine formation?
Nephron, functional unit of the kidney, the structure that actually produces urine in the process of removing waste and excess substances from the blood. There are about 1,000,000 nephrons in each human kidney.
What is the functional unit of the nephron?
The functional unit of the kidney, the nephron, consists in a glomerulus and a long folded renal tubule (Fig. 4.3. 13A). The glomerulus is composed of Bowman’s capsule and the glomerular tuft.
What is the structural and functional unit of nephron?
The nephron is the microscopic structural and functional unit of the kidney. It is composed of a renal corpuscle and a renal tubule. The renal corpuscle consists of a tuft of capillaries called a glomerulus and an encompassing Bowman’s capsule.
What is the name of the structural and functional unit of the kidney?
What is the structural and functional unit of living organisms?
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 the brain?
The basic functional unit of the brain is the neuron. Although there are upwards of 1,000 different types of neurons, they all have the same basic structure and function. Each neuron has a soma, or cell body, that performs all the basic metabolic functions required to keep the cell alive and functioning.
What are the structural and functional units of the nervous system?
Neurons, or nerve cell, are the main structural and functional units of the nervous system. Every neuron consists of a body (soma) and a number of processes (neurites).
What is the basic functional unit of the 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 the structural and functional unit of the lungs?
The alveoli are the functional units of the lungs and they form the site of gaseous exchange.
What divides the upper and lower respiratory system?
Answer c. The epiglottis separates the upper and lower respiratory tract.
What are the parts of the lower respiratory tract?
The major passages and structures of the lower respiratory tract include the windpipe (trachea) and within the lungs, the bronchi, bronchioles, and alveoli. Deep in the lungs, each bronchus divides into secondary and tertiary bronchi, which continue to branch to smaller airways called the bronchioles.
What are the two sections of the respiratory system?
It has two major divisions: the upper respiratory tract and the lower respiratory tract. The upper respiratory tract includes the nasal cavity, pharynx, and larynx.
What is the sequence of the respiratory system?
The air that we breathe in enters the nose or mouth, flows through the throat (pharynx) and voice box (larynx) and enters the windpipe (trachea). The trachea divides into two hollow tubes called bronchi.