Test Review

ball-and-socket joint

knee

joint that allows bones to “glide” over each other

elbow

Blood Vessel

Compact Bone

Marrow

Spongy bone

fills the center and spaces at the ends of bones and produces blood cells

marrow

backbone rib cage arms and legs skull

blood vessels nutrients nerves muscle fibers

Compact bone contains tightly packed

osteocytes

calcium regular exercise a balanced diet avoiding UV radiation

The point where two or more bones

meet is called a

joint

Smooth muscles can be found

in internal organs

Muscle cells get the energy needed to contract from

ATP

What is the difference between

cartilage and bone?

Bone contains significant mineral deposits between its cells, while cartilage does not.

can change the diameter of blood vessels.

moves food through the digestive tract.

is not under conscious control.

The total amount of force that a muscle exerts

depends on the total number of individual muscle fibers that have been stimulated

Ligaments attach

bone to

bone

It has been known for a long time that muscle contraction requires ATP. Scientists have discovered that ATP is required to release the attachments between actin and myosin in the many cycles of attachment, release, and reattachment that result in sliding of these filaments past each other. Which of the following phenomena can be explained by this specific role of ATP?

muscle fatigue

Tendons are bands of tissue that connect

muscles to

bones

Flexors and extensors are examples of

voluntary muscles

The loss of bone density that may occur in the later years of life is called

osteoporosis

In an embryo, the skeleton is originally made of

cartilage

Yellow marrow is a soft tissue within bones that

consists mainly of fat and stores energy

A person with a broken pelvic bone would probably be unable to

walk or run

The heart and lungs are protected by the

rib cage

An embryo’s skeleton is made of?

Helps prevent bone loss?

Calciumregular exercisebalanced dietlimited UV radiation