Nervous tissue enables us to sense heat or cold. Specialised nerve cells called neurons receive sensory information from receptors in the skin and transmit messages to the brain, which interprets the sensations and produces appropriate responses.
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Simple squamous epithelial tissue in the lungs allows oxygen to enter the blood. Its thin, flat cells provide a short diffusion pathway, enabling rapid exchange of oxygen and carbon dioxide between air sacs and blood vessels efficiently.
Connective tissue holds the body together and supports different organs and tissues. It binds skin, muscles and bones, providing strength, support and attachment, ensuring body parts remain connected and properly organised during movement and daily activities.
Various body parts are connected by connective tissues such as blood, bones, cartilage, tendons and ligaments. These tissues support organs, transport materials, connect muscles and bones, stabilise joints and maintain proper coordination throughout the body.
Blood clotting is caused by platelets present in blood. When injury occurs, platelets gather at the wound and help form a clot, preventing excessive blood loss and protecting the body from harmful microorganisms entering through cuts.