Biology Concepts Archives - Page 5 of 15 - CBSE Class Notes Online

Biology / Biology Concepts / Class 10 / Class 11 / Class 12 / NEET Biology / Notes / Notes / Science / Science Facts / Transportation

Human Circulatory System

April 7, 2023February 7, 2024 - by Jaishree Gorane - 5 Comments.

The human circulatory system is responsible for delivering oxygen, nutrients, and hormones to cells and tissues throughout the body. It consists of the heart, blood vessels and blood. The heart pumps oxygenated blood to the body through arteries and the deoxygenated blood returns to the heart through veins. The circulatory system also helps remove waste products from cells and helps regulate body temperature.

Biology / Biology Concepts / Chapter 6 Life Processes - Class 10 / Class 10 / Class 12 / NEET Biology / Notes / Science / Science Facts / Transportation / Uncategorized

Ascent of Sap

April 5, 2023May 3, 2023 - by Jaishree Gorane - 1 Comment

The Ascent of Sap is the movement of water through the Xylem vessels from the roots to the leaves. It is essential for various processes such as photosynthesis, transpiration and respiration. The cohesion-tension theory is widely accepted to explain the mechanism of the Ascent of Sap, where water moves up through the Xylem vessels due to a combination of transpiration and cohesive forces. Factors such as temperature, humidity, and wind affects Ascent of Sap

Biology / Biology / Biology Concepts / Chapter 6 Life Processes - Class 10 / Class 10 / Class 11 / Class 12 / NEET Biology / Science / Science Facts / Transportation

Blood Coagulation (Blood Clotting)

April 3, 2023November 9, 2023 - by Jaishree Gorane - Leave a Comment

Blood coagulation or blood clotting is a complex process that prevents excessive bleeding after an injury. It involves platelets, clotting factors, fibrin, and endothelial cells and occurs in a series of steps including vasoconstriction, platelet activation, the coagulation cascade, clot retraction and fibrinolysis. There are many clotting factors involved in coagulation. Disruptions to any of them can lead to bleeding disorders or unwanted blood clots.

Phloem – Definition, Structure, Function, Types and How does Phloem tissue work

March 23, 2023March 23, 2023 - by Jaishree Gorane - 5 Comments.

Phloem tissue is a type of vascular tissue in plants that transports sugars, amino acids, hormones and other organic compounds from the leaves to the rest of the plant. The tissue is made up of several different types of cells like sieve tube elements, companion cells, phloem parenchyma and phloem fibers. Phloem tissue plays a critical role in plant growth and development by facilitating the transport of hormones, defending against pathogens, transmitting signals and storing nutrients. There are two types of phloem tissue- primary phloem and secondary phloem.

Biology / Biology / Biology Concepts / Chapter 6 Life Processes - Class 10 / Class 10 / Class 11 / NCERT Long Question Answers / NEET Biology / Notes / Question And Answer / Science / Science Facts / Transportation

What’s Systolic and Diastolic Blood Pressure?

March 19, 2023December 23, 2023 - by Jaishree Gorane - 2 Comments.

Blood pressure is a vital sign that reflects the pressure of blood against the walls of arteries. Systolic blood pressure is the pressure in the arteries when the heart contracts and pumps blood out into the body, while diastolic blood pressure is the pressure in the arteries when the heart is at rest between beats. This article will provide an in-depth look at the differences between systolic and diastolic blood pressure, and why they are important .

Biology / Biology / Biology Concepts / Chapter 6 Life Processes - Class 10 / Class 10 / Class 11 / Class 12 / NCERT Long Question Answers / NEET Biology / Notes / Question And Answer / Science Facts / Transportation

Heart Valves- Types, Location, Structure and Functions

March 17, 2023November 1, 2023 - by Jaishree Gorane - 3 Comments.

The human Heart has four chambers, and four valves ensure that blood flows in the correct direction. The valves are made up of thin flaps of tissue that open and close like doors. There are four main types of Heart valves – the Aortic Valve, Mitral Valve, Pulmonary Valve and Tricuspid Valve. Each valve plays a vital role in regulating blood flow in and out of the Heart. Any problems with the valves can lead to a variety of conditions that affect Heart function.

Biology / Biology / Biology Concepts / Chapter 6 Life Processes - Class 10 / Class 10 / Class 11 / Class 12 / NCERT Long Question Answers / NEET Biology / Notes / Question And Answer / Science / Science Facts / Transportation

Veins – Structure , functions ,Venous System and Circuits and Vein Valves

March 16, 2023April 11, 2023 - by Jaishree Gorane - 6 Comments.

Veins are vital blood vessels that collect oxygen-poor blood and transport it back to the heart. They are made up of three layers of tissue and fibers, and can contain one-way valves that keep blood flowing in the right direction. Veins transport oxygen-poor blood throughout the body and oxygen-rich blood from the lungs back to the heart. Veins require external forces such as breathing and muscle movement to push blood in the right direction.

Types of Veins and their Functions

March 15, 2023December 23, 2023 - by Jaishree Gorane - Leave a Comment

Veins are essential for the circulatory system, transporting blood back to the heart. Four main types of veins include pulmonary, systemic, superficial and deep veins, each with unique characteristics. Pulmonary veins carry oxygenated blood from the lungs to the heart’s left atrium, while systemic veins transport deoxygenated blood from the body’s tissues back to the heart. Superficial veins are smaller and near the skin’s surface and deep veins are larger and deeper in the body.

Biology / Biology / Biology Concepts / Chapter 6 Life Processes - Class 10 / Class 10 / Class 11 / Class 12 / NCERT Long Question Answers / NEET Biology / Notes / Question And Answer / Science / Science Facts / Transportation

Arteries in The Body

March 14, 2023April 11, 2023 - by Jaishree Gorane - 7 Comments.

Arteries in the body are an essential component of the Circulatory System. There are two main circuits- Pulmonary and Systemic Circuit. Arteries are classified based on their size and composition. Elastic arteries, such as the aorta, are the largest and most flexible, while muscular arteries and arterioles are responsible for directing blood flow to specific areas. Major arteries, including those in the head and neck, torso, abdomen, arms and legs play vital roles in delivering oxygen and nutrients throughout the body.

Biology / Biology / Biology Concepts / Chapter 6 Life Processes - Class 10 / Class 10 / Class 11 / Class 12 / NEET Biology / Notes / Science / Science Facts / Transportation / Uncategorized

Arteries – Structure , Layers, Functions

March 12, 2023April 11, 2023 - by Jaishree Gorane - 7 Comments.

Arteries are essential blood vessels responsible for carrying oxygen-rich blood away from the heart and distributing it throughout the body. Arteries are thick, muscular, and elastic, designed to withstand high pressure. Arteries have three main layers – the Tunica Intima, Tunica Media and Tunica Adventitia – each with distinct structures and functions.