Basics
Arteries, Veins, and Capillaries
The blood from the heart is carried through the body by a complex network of blood vessels (Figure…
July 14, 2021 · Rajil TLAuthor: Rajil TL
Rajil TL is a SenseCentral contributor focused on tech, apps, tools, and product-building insights. He writes practical content for creators, founders, and learners—covering workflows, software strategies, and real-world implementation tips. His style is direct, structured, and action-oriented, often turning complex ideas into step-by-step guidance. He’s passionate about building useful digital products and sharing what works.
Basics
Mammalian Heart and Blood Vessels
The heart is a complex muscle that pumps blood through the three divisions of the circulatory system: the…
July 14, 2021 · Rajil TL
Basics
Components of the Blood
Hemoglobin is responsible for distributing oxygen, and to a lesser extent, carbon dioxide, throughout the circulatory systems of…
July 14, 2021 · Rajil TL
Basics
The Circulatory System
Figure 21.1. Just as highway systems transport people and goods through a complex network, the circulatory system transports…
July 14, 2021 · Rajil TLBasics
Transport of Gases in Human Bodily Fluids
Once the oxygen diffuses across the alveoli, it enters the bloodstream and is transported to the tissues where…
July 14, 2021 · Rajil TLBasics
The Work of Breathing
The number of breaths per minute is the respiratory rate. On average, under non-exertion conditions, the human respiratory rate…
July 14, 2021 · Rajil TL
Basics
The Mechanics of Human Breathing
Boyle’s Law is the gas law that states that in a closed space, pressure and volume are inversely…
July 14, 2021 · Rajil TL
Basics
Breathing
Mammalian lungs are located in the thoracic cavity where they are surrounded and protected by the rib cage,…
July 14, 2021 · Rajil TLBasics
Gas Pressure and Respiration
The respiratory process can be better understood by examining the properties of gases. Gases move freely, but gas…
July 14, 2021 · Rajil TL
Basics
Gas Exchange across Respiratory Surfaces
The structure of the lung maximizes its surface area to increase gas diffusion. Because of the enormous number…
July 14, 2021 · Rajil TL