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Download Skeletal System, Muscular System and Skin Notes
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Muscular System Notes To allow movement, the bones and joints of the skeletal system must work with the muscular system. The muscular system provides the force needed to move the bones of the skeletal system. The human body has about 600 muscles that are responsible for all of the body’s movements… inside and out. Involuntary muscles are not under your control… you don’t have to think about them. Examples: blinking, breathing, digestion, heartbeat. Voluntary muscles are muscle that you do control… Examples: smiling, writing, biking, skateboarding, etc… 3 Types of Muscle Tissue Type of tissue Voluntary or involuntary Skeletal muscle Smooth muscle Cardiac muscle Voluntary Involuntary Involuntary Striated (banded) Smooth Striated React quickly & tire quickly React slowly and & tire slowly Does not tire easily. Appearance Behavior Function Move bones. Work in pairs… flexors contract to bend a joint while the Controls movement of extensors allow a joint to internal organs… straighten. moves food through Attached to bone by strong digestive system, connective tissue called lines the blood tendons. vessels, bladder and reproductive organs Found only in the heart and controls the contractions of the heart muscles that cause our heartbeat. Muscular strength and flexibility may be maintained by stretching (warming up) & regular exercise. Muscle cells do increase in size so that the thicker the muscle is, the stronger it is. Cramps occur when the entire muscles contracts and stays contracted. Pulled or strained muscles occur when the muscles is overworked or overstretched. Muscular System Notes To allow ____________________, the bones and joints of the skeletal system must work with the _______________ system. The muscular system provides the _______________ needed to move the _______________ of the skeletal system. The human body has about _______________ muscles that are responsible for all of the body’s movements… _______________ & __________. _________________________ are not under your control… you don’t have to think about them. Examples: ______________________________________ _________________________ are muscle that you do control… Examples: _____________________________________________________ Type of tissue Voluntary or involuntary 3 Types of Muscle Tissue ____________________ ____________________ muscle muscle ____________________ muscle ____________________ ____________________ ____________________ Striated (banded) Smooth Striated React quickly & tire quickly Move ___________. Work in pairs… _________________ contract to bend a joint while the ________________ allow a joint to straighten. Attached to bone by strong connective tissue called _______________. React slowly & tire slowly Does not tire easily. Controls movement of _______________ _______________ … moves food through digestive system, lines the blood vessels, bladder and reproductive organs Found only in the _______________ and controls the contractions of the heart muscles that cause our __________________. Appearance Behavior Function Muscular strength and flexibility may be maintained by _____________________ (____________________) & _______________ _______________. Muscle cells do increase in size so that the _______________ the muscle is, the _______________ it is. _______________ occur when the entire muscles contracts and stays contracted. _______________ or _______________ muscles occur when the muscles is overworked or overstretched. Major Body Muscles Trapezius Deltoid Pectorals Triceps Biceps Obliques Latissimus dorsi Extensors Flexors Abdominals Gluteus Quadriceps Hamstrings Tibialis Gastrocnemius (calf) Soleus
