Here, you'll find important questions related to Chapter 7 The Circulatory System For ICSE Class 10 Biology. These questions have been crafted to assist students in their preparation for the ICSE Class 10 Biology Examination in 2023–24. By practising various question types, students can clarify their doubts, enhance their exam readiness, boost their confidence, and refine their problem-solving skills
The circulatory system, a remarkable network of vessels, organs, and blood, serves as the lifeblood of our bodies, quite literally. As we embark on our journey to unravel the intricacies of this vital biological system, we delve into the Fifth chapter of ICSE Class 10 Biology, titled "The Circulatory System." This chapter offers a captivating exploration of how the human body transports oxygen, nutrients, and waste products to sustain life. In the pursuit of a comprehensive understanding of this crucial system, students often seek guidance and clarity on essential concepts. To aid in your preparations for the ICSE Class 10 Biology examination, we have compiled a set of biology important questions for Class 10 ICSE, specifically tailored to the topic of the circulatory system. These important questions of biology Class 10 ICSE are designed to reinforce your knowledge and help you excel in your studies. Join us on this educational voyage as we uncover the intricacies of the circulatory system and address pertinent biology questions for Class 10 ICSE.
The circulatory system, often referred to as the cardiovascular system, is a complex network of blood vessels, the heart, and blood itself that plays a fundamental role in the human body. Its primary function is to transport vital substances, such as oxygen, nutrients, hormones, and waste products, throughout the body to nourish cells, maintain homeostasis, and support various bodily functions
Key components of the circulatory system include:
Heart: The heart is a muscular organ responsible for pumping blood throughout the body. It consists of four chambers: two atria (upper chambers) and two ventricles (lower chambers), which work together to ensure that oxygenated blood is sent to the body's tissues and deoxygenated blood is returned to the lungs for oxygenation.
Blood Vessels: Blood vessels are a network of tubular structures that carry blood to and from the heart. There are three main types of blood vessels:
Blood: Blood is the transport medium of the circulatory system. It consists of red blood cells (erythrocytes) that carry oxygen, white blood cells (leukocytes) that help fight infections, and platelets (thrombocytes) that aid in blood clotting. Plasma, a liquid component of blood, carries various substances, including hormones and nutrients.
Circulation: Blood circulates through two main circuits in the body:
The circulatory system plays a critical role in maintaining the body's overall health and ensuring that all cells receive the necessary oxygen and nutrients for survival. It also helps regulate temperature, transport hormones, and defend against infections. Understanding the circulatory system is essential in the field of biology, particularly for students studying Class 10 ICSE Biology, where it is often a topic covered in depth.
Blood pressure is the pressure which blood flowing through arteries exerts on their walls. It has 2 limits: upper limit (systolic pressure) occurs when fresh blood is pushing through the arteries due to ventricular contraction of the heart. Lower limit (diastolic pressure): recorded when a wave has passed over. Range of normal blood pressure:
Systolic : 100-140 mm Hg
Diastolic : 60-80 mm Hg
There are three layers in the artery and veins. They are:
Tunica interna: consists of endothelial cells.
Tunica media: consists of smooth muscles and elastic fibres.
Tunica externa: consists of connective tissue.
Circulatory system is also called a transport system because it transports food, water, hormones, enzymes, electrolytes, antibodies and respiratory gases to or away from the body tissues.
A man can live without food for a number of days, but he cannot survive without oxygen for more than a few minutes because food is stored in the body in various forms like proteins, glycogen, fats, etc. so the stored food material and energy can be used but oxygen is not stored in the body in any form. Hence, deficiency of oxygen leads to asphyxiation and finally the person dies.
The circulatory system stands as one of the most remarkable and essential systems within the human body. oswal.io offers a valuable resource in the form of a comprehensive collection of questions, making the study of the circulatory system, and indeed all aspects of biology, more accessible and engaging. These questions provide students with the opportunity to test their knowledge, deepen their understanding, and prepare effectively for examinations.
Ans: The human circulatory system is a network of arteries, veins, capillaries designed to provide essential minerals, nutrients, and other essential components to various parts of the body. It also collects metabolic waste to be filtered or expelled from the body.
Ans: The human circulatory system is a closed system that pumps blood through a network of arteries and veins. This type of circulation is seen in all vertebrates and some invertebrates.
Ans: In a closed circulatory system, more pressure is available in the system, and the blood can reach the body extremities much quicker. This translates to a much faster metabolism rate and quicker movements in organisms with closed circulatory systems.
Ans: Double circulation is a system of circulation where the blood flows through the heart twice. This type of circulation is very effective as the body has a constant supply of oxygenated blood.