For every subject in Class 11, the Punjab School Education Board (PSEB) has published the most recent curriculum. Based on ...

Since their circulatory system is open, their blood isn’t confined to veins and arteries like in mammals. Instead, it flows freely around their organs, making their unique heart placement work ...

Zoe uses CGI graphics to explain the structure of the heart and the difference between veins and arteries. Suitable for teaching science at KS2 and First and Second Level.

The octopus is one of the world’s most alien creatures, but nothing puts that into perspective more than the physiological ...

First, the sinoatrial, or SA, node sets your “resting” heart rate, usually somewhere between 60 and 100 beats per minute.

Heart muscle cells do something similar, issuing electrical “heave-ho” signals that make the organ beat. Skin and other epithelial cells, however, were thought to be silent; they form barrier ...

Joee Taylor, NonStop Local Senior Multimedia Journalist Jun 16, 2025 Updated Jun 16, 2025 ...

Objective To estimate the dose–response associations between non-occupational physical activity and several chronic disease and mortality outcomes in the general adult population. Design Systematic ...

Compared with the effects of other substances, the effects of cocaine don’t last very long. A typical cocaine high only lasts for about 15 to 30 minutes, depending on how you ingest it.

Omega-3 essential fatty acids, "good" fats that have been shown to have heart -healthy effects. Each tablespoon of ground flaxseed contains about 1.8 grams of plant omega-3s.

While this stress response system in our body has evolved to protect us, in most cases, we don’t need that extra energy boost to deal with whatever is causing our anger (unexpected traffic, a ...