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33 Cards in this Set
- Front
- Back
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Which of the following is NOT part of the axial skeleton?
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pelvis
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How many bones are found in an adult human skeleton?
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206
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Which of the following contains nerves and blood vessels and runs through the compact bone?
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Haversian canals
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Which of the following is true about red marrow?
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It makes blood cells.
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What is the function of cells called osteoclasts?
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break down bone
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Which diagram in Figure 36-1 is an example of a ball-and-socket joint?
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Diagram A
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A saddle joint is represented in which diagram in Figure 36-1?
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Diagram B
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Which diagram(s) in Figure 36-2 show(s) muscles that are striated?
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A and C
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About what percent of the mass of the human body is made up of muscle?
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over 40 percent
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Where is the protein called actin located in the body?
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thin filaments
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In addition to myosin, what other protein is involved in skeletal muscle contraction?
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actin
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Which of the following types of muscle generally remain in a state of partial contraction when you are keeping your legs straight?
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skeletal muscle
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The top layer of the epidermis is made of
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flat, dead cells.
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Which of the following is NOT a function of skin?
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contracts and relaxes muscles
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Which of the following is NOT part of the integumentary system?
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cartilage
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From which of the following does the basic structure of hair and nails form?
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keratin
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Which of the following provides support for the body, attachment sites for muscles, and protection for internal organs?
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skeleton
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Which of the following is NOT a function of bones in the human skeletal system?
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regulating body temperature
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The main function of the skull is to
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protect the brain.
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The periosteum is a
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tough layer of connective tissue surrounding a bone.
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Of what is the skeleton of an embryo mainly composed?
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cartilage
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Ligaments connect
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bone to bone.
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In Figure 36-2, diagram B is an example of
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smooth muscle.
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Where is cardiac muscle tissue located in the body?
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heart
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What happens when the thin filaments in a muscle fiber slide over the thick filaments?
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A muscle contracts.
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Myosin and actin make up
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myofibrils
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What tough connective tissue joins skeletal muscles to bones?
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tendons
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The most important function of the skin is
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protection.
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What two layers make up skin?
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epidermis and dermis
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Which of the following are tubelike pockets of epidermal cells that extend into the dermis?
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hair follicles
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A less dense tissue known as __ __________________ is found in the ends of long bones and in the middle part of short, flat bones.
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spongy bone
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The joints between adjacent vertebrae are slightly ____________________ joints
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moveable
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The concept used to explain the action of filaments in muscle contraction is the ___l__________________________.
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sliding filament model_.
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