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Muscles and bones. Bones. How many total bones do you have in your body? 206 How many bones are in your face? 14 bones are in your face. How many bones are in your wrist? 8 bones are in each wrist. How many bones in the foot? 23 bones are in each foot including the ankle
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Bones • How many total bones do you have in your body? • 206 • How many bones are in your face? • 14 bones are in your face. • How many bones are in your wrist? • 8 bones are in each wrist. • How many bones in the foot? • 23 bones are in each foot including the ankle • What’s the longest bone in the body? • Femur (thigh bone) • Your bones consist of 50% water and 50% solid matter.
Bones • Your bones give points of attachments for the muscles so that they may serve as levers and make movement possible.
Bones • When you were born you had over 300 bones. • As you grew, some of these bones began to fuse together and now you have 206 bones.
Are bones alive? • YES! • Have their own nerves and blood vessels • The marrow inside bone provides a site for the formation of blood cells.
Osteoporosis • When there's not enough calcium in the bloodstream • Body attempts to pull calcium from the bones • thins and weakens bones • Causes osteoporosis • leads to breaks and fractures
Osteoporosis affects 10 million Americans, mostly women. • An additional 18 million Americans already have low bone mass, osteopenia, which places them at high risk. • By the age of 20, the average young person has acquired roughly 98% of his/her skeletal mass.
Calcium • Helps prevent breast and colon cancer • reduces the symptoms of PMS • prevents cavities and strengthens tooth enamel • reduces hypertension and lowers blood pressure • helps promote weight loss. • America is in a Calcium Crisis: 9 out of 10 women, 7 out of 10 men, and 3 out of 4 teenagers do not get enough calcium.
HINTS (collar bone) (breast bone) (funny bone) (wrist bones) (longest bone) (knee cap) (shin bone) (Ankle bones)
Cranium (skull) ANSWERS Cervical Vertebrae Clavicle Scapula Humerus Sternum Rib Cage Lumbar Vertebrae Radius Pelvis Ulna Carpals Metacarpals 20 Phalanges Femur Patella Tibia Fibula Tarsals Metatarsals
Your tailbone is called the coccyx. (Pronounced kok' siks) • Your bones have small blood vessels and lymphatic tissue for the maintenance and repair of bone tissue.
Your skull, a series of fused bones, acts like a hard protective helmet for your brain. • Your vertebrae (bony spinal column) surrounds and protects your spinal cord, which is a complex bundle of nerves.
Your ribs surround and protect your heart, liver and lungs and serving as a coat of armor.
Muscles • The human body has over 600 voluntary/skeletal muscles. This means muscles which we can control, as opposed to muscles of the heart and intestines which we can not voluntarily control. • Muscles are made of microscopic filaments which contract and slide over each other causing the muscles to shorten and therefore contract.
No matter how much you exercise you can not increase the number of muscle cells you have. By getting bigger, via strength training, you are simply increasing the size of each muscle cell. The quantity of muscle cells remain the same.
Muscles can only contract, they do not lengthen unless an opposing muscles contracts and causes lengthening of the first muscle. • Muscles are metabolically active and are responsible for a large amount of our caloric requirements.
There are fast-twitch and slow-twitch muscles. Although the type of exercise you do may develop one over the other, the quantity of each is determined by genetics and can not be changed. This is why some people are 'natural' sprinters while other are 'naturally' better at long distance running.
The largest muscle is the Gluteus Maximus, the muscles of the buttocks. • The strongest muscles are: • The Soleus, part of the calf muscle, below the calf muscles, as it can apply the most force. • The Masseter, also known as the jaw muscles. • The tongue. Yes, the tongue is a muscle! And for its size it's very strong.
