System: Muscular
Terms
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- What are the three types of muscles
-
1.skeletal
2.Smoothe
3.Cardiac - Describe Skeletal Muscles
- Voulentary, Striated
- Describe Smoothe Muscles
- Invoulentary, not striated, ex is the digestive system muscles
- Describe Cardiac Muscles
- Invoulentary, stiated, ex is the heart
- Extensor
- A muscle that extends the joint
- Flexor
- A muscle that bends the joint
- Tendon
- where muscle attatches to bone
- Ligament
- where bone attatches to bone
- Sarcomere
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combination of actin/myosin.
Is the basic unit of muscle contractions - Z-Line
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each side of the sarcomere
make it so that the sacromere has something to grip onto - What is the break down of Skeletal Muscles
- Skeletal->fasciles->muscular fiber->myofibers(bunches of sarcomeres)->actin/myosin
- What do actin/myosin do?
- interact to shorten length of sarcomere...pull action to overlap
- Bicep
- Flexes Arm
- Tricep
- Extends Arm
- Latissimous Dorsi
- Below shoulders. help pull arms down
- Trapezius
- Shrug Muscle. Base of neck to top of shoulders
- Abdominal Muscles
- Help stabilize and bend body
- Quadraceps
- on top of thigh (extend)
- Hamstrings
- on bottom of thigh (flex)
- Gastrocnemius
- calf muscle (move foot)
- Gluteus Maximus
- Booty