Transcript Skeletal & Muscular Systems

Skeletal & Muscular Systems
Form and Movement
Functions of the Skeleton
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Gives form to the organism
Stores minerals such as calcium
Serves as attachment points
for muscles
Protects vital organs
Produces blood cells
Bones attach to muscles to
allow movement
Regents Question
One function of the endoskeleton is to
1)Transmit impulses
2)Produce lactic acid
3)Store nitrogenous wastes
4)Produce blood cells
Regents Answer
4)Produce blood cells
Bone and Bone Tissue
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Bone tissue includes
bone cells
(osteocytes) and
non-living mineral
deposits.
Bone parts: 1.
Marrow, 2. Compact
bone, 3.
Periosteum, 4.
Spongy bone
Joints
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Nonmovible ( skull )
Hinge ( elbow and knee )
Gliding ( vertebrae )
Ball-in-socket ( shoulder and hip )
Regents Question
The humerus, the bone in the upper arm,
is directly connected to other bones in
the arm by
1)Cartilage
2)Extensors
3)Ligaments
4)Tendons
Regents Answer
3)Ligaments
Bone Diseases
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Osteoporosis
Acromegaly
Leukemia
Vitamin D deficency
Muscular System
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Contract and relax to move the body.
Stores energy
Protects internal organs
Regents Question
The bones of humans most directly aid
body movement
1)Producing blood cells in the marrow
2)Providing an anchor site for muscles
3)Protecting internal organs
4)Absorbing excess calcium from the
blood
Regents Answer
2)Providing an anchor site for muscles
Muscle Types
Cardiac Muscle
Smooth Muscle
Skeletal Muscle
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Cardiac Muscle
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Found making up
the heart.
Involuntary
Striated and
branched
Smooth Muscle
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Found in the blood
vessels and
digestive tract.
Involuntary
Non striated
Skeletal Muscle
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Voluntary
Striated
Found attached to
the skeleton.
Regents Question
Which malfunction is most closely
associated with connective tissue that is
involved in human locomotion?
1)Tendonitis
2)Bronchitis
3)Diabetes
4)Meningitis
Regents Answer
1)Tendonitis
Muscle Attachment to Bone
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Muscles are attached to bone by
connective tissue called tendons.
Muscles are attached in opposing pairs.
One Muscle contracts to raise the limb,
while the second will contract to lower it.
Bicep / Triceps
Regents Question
Which statement does not correctly
describe a function of cartilage?
1)It provides flexibility in an embryo
2)It makes up the outer ear
3)It anchors muscles to bones
4)It cushions bones at a joint
Regents Answer
3)It anchors muscles to bones