Which function of the skeletal system would be especially important if you were in a car accident?
- storage of minerals
- protection of internal organs
- facilitation of movement
- fat storage
Bone tissue can be described as ________.
- dead calcified tissue
- cartilage
- the skeletal system
- dense, hard connective tissue
Without red marrow, bones would not be able to ________.
- store phosphate
- store calcium
- make blood cells
- move like levers
Yellow marrow has been identified as ________.
- an area of fat storage
- a point of attachment for muscles
- the hard portion of bone
- the cause of kyphosis
Which of the following can be found in areas of movement?
- hematopoiesis
- cartilage
- yellow marrow
- red marrow
The skeletal system is made of ________.
- muscles and tendons
- bones and cartilage
- vitreous humor
- minerals and fat
Most of the bones of the arms and hands are long bones; however, the bones in the wrist are categorized as ________.
- flat bones
- short bones
- sesamoid bones
- irregular bones
Sesamoid bones are found embedded in ________.
- joints
- muscles
- ligaments
- tendons
Bones that surround the spinal cord are classified as ________ bones.
- irregular
- sesamoid
- flat
- short
Which category of bone is among the most numerous in the skeleton?
- long bone
- sesamoid bone
- short bone
- flat bone
Long bones enable body movement by acting as a ________.
- counterweight
- resistive force
- lever
- fulcrum
Which of the following occurs in the spongy bone of the epiphysis?
- bone growth
- bone remodeling
- hematopoiesis
- shock absorption
The diaphysis contains ________.
- the metaphysis
- fat stores
- spongy bone
- compact bone
The fibrous membrane covering the outer surface of the bone is the ________.
- periosteum
- epiphysis
- endosteum
- diaphysis
Which of the following are incapable of undergoing mitosis?
- osteoblasts and osteoclasts
- osteocytes and osteoclasts
- osteoblasts and osteocytes
- osteogenic cells and osteoclasts
Which cells do not originate from osteogenic cells?
- osteoblasts
- osteoclasts
- osteocytes
- osteoprogenitor cells
Which of the following are found in compact bone and cancellous bone?
- Haversian systems
- Haversian canals
- lamellae
- lacunae
Which of the following are only found in cancellous bone?
- canaliculi
- Volkmann’s canals
- trabeculae
- calcium salts
The area of a bone where the nutrient foramen passes forms what kind of bone marking?
- a hole
- a facet
- a canal
- a fissure
Why is cartilage slow to heal?
- because it eventually develops into bone
- because it is semi-solid and flexible
- because it does not have a blood supply
- because endochondral ossification replaces all cartilage with bone
Why are osteocytes spread out in bone tissue?
- They develop from mesenchymal cells.
- They are surrounded by osteoid.
- They travel through the capillaries.
- Formation of osteoid spreads out the osteoblasts that formed the ossification centers.
In endochondral ossification, what happens to the chondrocytes?
- They develop into osteocytes.
- They die in the calcified matrix that surrounds them and form the medullary cavity.
- They grow and form the periosteum.
- They group together to form the primary ossification center.
Which of the following bones is (are) formed by intramembranous ossification?
- the metatarsals
- the femur
- the ribs
- the flat bones of the cranium
Bones grow in length due to activity in the ________.
- epiphyseal plate
- perichondrium
- periosteum
- medullary cavity
Bones grow in diameter due to bone formation ________.
- in the medullary cavity
- beneath the periosteum
- in the epiphyseal plate
- within the metaphysis
Which of the following represents the correct sequence of zones in the epiphyseal plate?
- proliferation, reserved, maturation, calcification
- maturation, proliferation, reserved, calcification
- calcification, maturation, proliferation, reserved
- calcification, reserved, proliferation, maturation
A fracture can be both ________.
- open and closed
- open and transverse
- transverse and greenstick
- greenstick and comminuted
How can a fractured diaphysis release fat globules into the bloodstream?
- The bone pierces fat stores in the skin.
- The yellow marrow in the diaphysis is exposed and damaged.
- The injury triggers the body to release fat from healthy bones.
- The red marrow in the fractured bone releases fat to heal the fracture.
In a compound fracture, ________.
- the break occurs at an angle to the bone
- the broken bone does not tear the skin
- one fragment of broken bone is compressed into the other
- broken bone pierces the skin
The internal and external calli are replaced by ________.
- hyaline cartilage
- trabecular bone
- osteogenic cells
- osteoclasts
The first type of bone to form during fracture repair is ________ bone.
- compact
- lamellar
- spongy
- dense
Wolff’s law, which describes the effect of mechanical forces in bone modeling/remodeling, would predict that ________
- a right-handed pitcher will have thicker bones in his right arm compared to his left.
- a right-handed cyclist will have thicker bones in her right leg compared to her left.
- a broken bone will heal thicker than it was before the fracture.
- a bed-ridden patient will have thicker bones than an athlete.
Calcium cannot be absorbed from the small intestine if ________ is lacking.
- vitamin D
- vitamin K
- calcitonin
- fluoride
Which one of the following foods is best for bone health?
- carrots
- liver
- leafy green vegetables
- oranges
Which of the following hormones are responsible for the adolescent growth spurt?
- estrogen and testosterone
- calcitonin and calcitriol
- growth hormone and parathyroid hormone
- thyroxine and progesterone
With respect to their direct effects on osseous tissue, which pair of hormones has actions that oppose each other?
- estrogen and testosterone
- calcitonin and calcitriol
- estrogen and progesterone
- calcitonin and parathyroid hormone
When calcium levels are too high or too low, which body system is primarily affected?
- skeletal system
- endocrine system
- digestive system
- nervous system
All of the following play a role in calcium homeostasis except
- thyroxine
- calcitonin
- parathyroid hormone
- vitamin D
Which of the following is most likely to be released when blood calcium levels are elevated?
- thyroxine
- calcitonin
- parathyroid hormone
- vitamin D