📝 Quick Overview: Capillaries play a "leak and take-back" game with our blood plasma. This game involves releasing tissue fluid (a type of extracellular fluid) and later reuptaking it. This movement depends on blood pressure, and it's a constant process happening in our bodies.

• What is it? Plasma is like the soup of our blood, and blood cells are like the veggies floating in it.
• What's in the soup?
  • Water (H2O) 🥤
  • Yummies like glucose (sugar) 🍬, amino acids (protein building blocks) 💪, and vitamins 🍊.
  • Mineral ions: Think of table salt breaking down into chloride and sodium.
  • Hormones (body's message carriers) 💌.
  • Plasma proteins.
  • Fat? Yep! But they roll around in special droplets called lipoproteins.

🛑 Fun Fact: Imagine a chocolate chip cookie. The cookie dough is the plasma, and the chocolate chips are the blood cells. Yum!

• Adapted to let part of the blood plasma ooze out into spaces between our body cells. Like a sponge, it can squeeze out some water but retains the big stuff.
• Most protein molecules act like "too-big-to-fit" guests and stay inside, but smaller substances enjoy the slide and go out!