MPP Week 5: Pre-Break Knowledge Quiz

Which three bones fuse to form the os coxae (hip bone)?

• Ilium, sacrum, coccyx

• Ischium, pubis, femur

• Ilium, ischium, pubis

• Femur, tibia, fibula

Answer explanation

The os coxae, or hip bone, is formed by the fusion of three bones: the ilium, ischium, and pubis. The other options include bones that do not contribute to the hip bone structure.

What is the function of the acetabulum?

• Articulates with the tibia

• Connects the ilium to the sacrum

• Receives/articulates with the head of the femur

• Serves as an attachment site for abdominal muscles

Answer explanation

The acetabulum is a cup-shaped socket in the pelvis that receives and articulates with the head of the femur, forming the hip joint. This is crucial for hip stability and mobility.

Which bone is the longest and strongest in the human body?

• Tibia

• Femur

• Fibula

• Humerus

Answer explanation

The femur is the longest and strongest bone in the human body, supporting the weight of the body and allowing for movement. It is located in the thigh and is crucial for activities like walking and running.

The patella is classified as a:

• Flat bone

• Irregular bone

• Sesamoid bone

• Long bone

Answer explanation

The patella, or kneecap, is classified as a sesamoid bone because it is embedded within a tendon, specifically the quadriceps tendon, and helps to protect the knee joint and improve leverage during movement.

Which ligament is commonly injured in athletes and provides anterior stability to the knee?

• Medial collateral ligament (MCL)

• Posterior cruciate ligament (PCL)

• Anterior cruciate ligament (ACL)

• Lateral meniscus

Answer explanation

The anterior cruciate ligament (ACL) is crucial for providing anterior stability to the knee and is frequently injured in athletes, especially during activities that involve sudden stops or changes in direction.

What is the primary function of the tibia?

• Muscle attachment only

• Weight-bearing

• Supports ankle movement

• Balances the pelvis

Answer explanation

The primary function of the tibia is weight-bearing, as it supports the body's weight during standing and movement. While it also aids in muscle attachment and ankle support, its main role is to bear weight.

The medial and lateral malleoli are projections of which bones, respectively?

• Tibia and fibula

• Femur and tibia

• Tibia and femur

• Fibula and calcaneus

Answer explanation

The medial malleolus is a projection of the tibia, while the lateral malleolus is a projection of the fibula. Therefore, the correct answer is tibia and fibula.

This is the tibia (next to the “L”)

• True

• False

Answer explanation

The statement is true because the tibia is a bone located in the lower leg, and it is commonly referred to in anatomical diagrams next to the 'L' for left. Thus, the correct answer is True.

Name this bone.

• femur
• humerus
• tibia

How many bones does an adult human have?

• 300
• 306
• 206
• 602