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