Exam 3 Review

The largest and strongest bone in the body is the...

• Pelvic girdle

• Humerus

• Femur

• Tibia

What bone is shown in red?

• Tibia

• Fibula

• Patella

• Femur

Answer explanation

Remember: The tibia articulates with the femur and the talus. The fibula only articulates with the tibia.

What bone is shown in red?

• Radius

• Humerus

• Ulna

• Clavicle

The pectoral girdle offers more ____, while the pelvic girdle offers more ____.

• Mobility; flexibility

• Stability; mobility

• Stability; flexibility

• Mobility; stability

Answer explanation

The upper limbs are more freely movable. The lower limbs support body's weight.

The bones in syndesmoses joints are...

• Interlocking and rigid

• Connected by ligaments

• Connected by cartilage

• Held in a joint cavity

Answer explanation

Syndesmoses are fibrous joints. What are the other 2 types of fibrous joints?

What is the function of bursae?

• Produce synovial fluid

• Allow expansion of the skull

• Reduce friction from joint parts rubbing together

• Prevent crushing of bone ends

Answer explanation

Bursae are fluid filled sacs that decrease friction. Tendon sheaths are elongated bursae wrapped around a tendon.

This type of joint has limited mobility. An example would be the cartilaginous joint that unites the bodies of adjacent vertebrae.

• Synovial

• Synarthroses

• Diarthroses

• Amphiarthroses

Answer explanation

Diarthroses: Freely movable

Synarthroses: Immovable

Amphiarthroses: Slightly movable

Which picture shows supination?

• Palm posterior

• Palm anterior

Answer explanation

Radius and ulna are parallel during supination.

Know other movements as well, such as extension and flexion, adduction and abduction, etc.

The anterior cruciate ligament (ACL)...

• Prevents hyperextension of knee

• Prevents flexion of knee

• Aids in hyperextension of knee

• Prevents backward sliding of tibia

What surrounds muscle fascicles?

• Sarcolema

• Endomysium

• Epimysium

• Perimysium

Answer explanation

Epimysium: surrounds entire muscle

Perimysium: surrounds fascicles

Endomysium: surrounds each muscle fiber