Muscles

Fun facts More than 600 muscles in our bodies (about 650) Muscles make up approximately half of the human body’s weight The human heart will beat about 40 million times a year, and a person's heart will beat approximately 2.5 billion times by the time of their 70th birthday.

Smooth Muscles Smooth muscle is found in the walls of hollow organs like your intestines and stomach Are involved in many 'housekeeping' functions of the body for example pushing food through your small intestines and being able to contract your bladder in order for one to urinate Involuntary muscles (do without thinking) These muscles are also found in the eyes. They are there to help you focus your eyes so you can see. Muscles like this can also be found in women and are used especially during birth in the uterus wall to help push the baby out.

Cardiac Muscles These muscles make up the…heart Myocardium is another name for the cardiac muscle Also involuntary The heart is controlled by the “pacemaker” or the Sinoatrial Node which regulates the blood flow

Skeletal Muscles Skeletal muscles cover your skeleton, giving your body its shape. Skeletal muscles are under voluntary control, which means you consciously control what they do. Sometimes called striated muscle because the light and dark parts of the muscle fibers make them look striped Your skeletal muscles are always working in order to keep you moving and giving you the posture you need

Ligaments and Tendons

What’s the difference between ligaments and tendons? A tendon is a fibrous connective tissue which attaches muscle to bone. A tendon serves to move the bone or structure. A ligament is a fibrous connective tissue which attaches bone to bone, and usually serves to hold structures together and keep them stable. Tendons may also attach muscles to structures such as the eyeball.

What’s the difference between a sprain and a strain? A sprain is a stretch and/or tear of a ligament, the fibrous band of connective tissue that joins the end of one bone with another A strain is an injury of a muscle and/or tendon. Tendons are fibrous cords of tissue that attach muscles to bone

How many ligaments are in the human knee?

How many ligaments are in the human elbow?

Journal Draw what you think a muscle looks like and label it. On a side note……. There will be a quiz over this material and the previous material on Monday (our Next health class) just so you know.

Purpose of muscles They provide movement of the body by the voluntary muscles and also creates heat to help warm the body AKA- breathing, riding a bike, push-ups, and maintaining proper posture

Muscles continued Since your heart is a muscle it pumps blood through the body It directs the blood flow and regulates the blood pressure

Muscles continued Muscles allow the movement of our internal organs….such as what? Digestion (stomach) and bladder control These muscles are called what again? Involuntary They account for reflexes, the pupil in the eye adjusting and even when you get goose bumps

The Tissues Which are voluntary and which are involuntary?

Muscles of the Human body

Formula for maximum fat burn! 1. More muscle tissue results in a higher metabolism! 2. Metabolism – the rate at which the body converts food to energy 3. If you have a higher metabolism, you are likely to weigh less 4. Thus, the more muscle mass you have, the higher your metabolism, the more fat you will burn! 5. Combine weight training with cardio training (running) to achieve best results

How do you build strong muscles? Exercise regularly! Eat foods that are high in protein Protein – building blocks of muscle - meats, milk, eggs, yogurt, fish, nuts

a. Hypertrophy – increase in muscle size due to exercise b. Atrophy – decrease in muscle size from a lack of use of muscles

Muscular Strength vs Muscular Endurance Sets – grouping of reps for a given workout Repetitions (reps) - number of consecutive exercises performed for a given workout At your age the focus is on Muscular Endurance!!! Low Reps and Heavy Weight High Reps and Low Weight

Muscle Fatigue … Your muscles need Glycogen (muscle sugar) in order to function. When the glycogen is broken down into energy for the muscles a waste product called lactic acid is produced. A buildup of lactic acid decreases the muscles’ ability to contract and Muscle Fatigue sets in.

Clothespin Calisthenics 1. Hold a clothespin between your thumb and index finger and see how many times you can squeeze it in one minute. Record 2. Now, without resting, squeeze it as fast as you can for a second minute. Record

Problems of Muscular System 3. Muscular Dystrophy a. crippling disease characterized by progressive wasting away of skeletal muscles b. muscle cells are unable to function properly c. symptoms – muscle weakness, difficulty standing/walking, frequent falling d. cannot be cured, but early detection is key as muscle weakening can be delayed

Muscular Dystrophy

Journal Would you consider yourself healthy why or why not? Test Friday over Muscles