Human Body Tissue Types: (from left to right)
Skeletal Muscle - performs voluntary movements of the limbs, is arranged into bundles of fibres that connect to bones via tendons.
Adipose Tissue - a type of connective tissue that acts as an energy store and helps to cushion, protect and insulate the body.
Smooth Muscle - found in sheets on the walls of blood vessels, stomach, intestines and bladder. vital for maintaining blood pressure and for pushing food through the digestive system.
Spongy Bone - found in the centre of bones , the lattice-like spaces in spongy bone are filled with bone marrow or conective tissues.
Cartilage - found in the joints between bones and in the ear and nose. It is tough but flexible due to the high water content.
Dense Connective Tissue - occurs in the base layer of skin and forms structures such as ligaments and tendons.
Epithelial Tissue - forms a covering/lining for internal and external body surfaces. some epithelial tissues can secrete digestive enzymes while others can absorb substances such as food or water.
Nerve Tissue - forms the brain,. spinal cord, and the nerves that control movement, transmit sensation and regulate body function. Made up mainly of networks of nerve cells
Reference: Dr Alice Roberts, The Complete Human Body: The Definitive Visual Guide, 2010.
I donated blood today so I figured I’d post something about the circulatory system… and what better to talk about than the superstar of the system; the heart!
The average human heart beats about 62 times per minute and pumps 1.3 gallons (5 Liters) per minute. That means that at 70 years old a human’s heart has beat 2.5 billion times and has pumped 48 million gallons. This is an incredibly important responsibility as the blood pumped by the heart transports hormones, nutrients, waste, and oxygen throughout the body. You can live for 4 to 6 weeks without food, a week (max) without water, but without the oxygen carried to your brain by blood you’ve got 6-8 minutes before permanent brain damage occurs and you’re dead (or a vegetable) in about 15 minutes.
So there you have it. Take care of your heart because it takes care of you!
Source: school, How Your Heart Works by Dr. Carl Bianco, M.D.