The Skeletal System Notes

Multiple Choice

Why is the skeletal system important for the human body?

• It helps in digestion

• It provides support, protection, and movement

• It produces hormones

• It controls body temperature

Open Ended

Describe how the bones of the skeletal system support and protect different parts of the body.

Multiple Choice

Which function of the skeletal system involves the storage of minerals such as calcium and phosphorous?

• Movement

• Reservoir for minerals and adipose tissue

• Hematopoiesis

• Protection

Multiple Select

Which of the following are classified as long bones?

• Femur

• Carpal bones

• Finger bones

• Sternum

Multiple Choice

Which type of bone is characterized by being thin, flattened, and usually a bit curved?

• Long bones

• Short bones

• Flat bones

• Irregular bones

Multiple Choice

Which type of bone cell is responsible for breaking down and remodeling bone?

• Osteoclast

• Osteoblast

• Osteocyte

• Chondrocyte

Multiple Select

Which of the following bones undergo intramembranous ossification?

• Skull

• Ribs

• Leg

• Sternum

Multiple Choice

What percentage of the skeleton is replaced each year through bone remodeling?

• 1% to 5%

• 10% to 20%

• 30% to 40%

• 50% to 60%

Multiple Choice

Which hormone is released when blood calcium levels are low, and what effect does it have on bone?

• Parathyroid hormone; stimulates osteoclasts to break down bone

• Calcitonin; stimulates osteoblasts to build bone

• Insulin; stimulates osteocytes to maintain bone

• Growth hormone; stimulates bone elongation

Multiple Choice

Which of the following factors does NOT directly affect bone growth, development, and repair?

• Vitamin D

• Physical Stress

• Blood Type

• Growth Hormone

Open Ended

Match the type of fracture to its most likely cause: Transverse, Oblique, Spiral, Greenstick, Comminuted, Avulsion, Impacted, Fissure (or Hairline).

Multiple Choice

Which of the following are characteristics of a greenstick fracture?

• Fracture swirls around the bone

• Incomplete fracture where bone bends rather than breaks

• Breaks in multiple pieces

• Fracture occurs at an exact 90° horizontal angle

Multiple Choice

Which types of fractures are most likely to occur due to twisting forces or muscle contraction stronger than the force holding the tendon or ligament to bone?

• Spiral and Avulsion

• Transverse and Oblique

• Greenstick and Comminuted

• Impacted and Fissure

Multiple Choice

Which of the following is NOT a function of the skeletal system?

• Support

• Mineral storage

• Digestion

• Blood cell formation