Reinforcement quiz joints, blood

What type of joint is found in the elbow?

• Ball and socket

• Hinge

• Pivot

• Saddle

Why can a hinge joint like the elbow only move in one direction?

• Because it rotates in a circle

• Because of its fixed ligaments

• Because it allows back-and-forth movement only

• Because it has no cartilage

What gives blood its bright red color when it leaves the heart?

• Oxygen bound to hemoglobin

• Carbon dioxide

• Plasma

• Red blood cells multiplying

What is the color of blood returning to the heart, and why?

• Bright red due to oxygen

• Dark red due to lack of oxygen

• Blue due to deoxygenation

• Green due to carbon dioxide

Which of the following best describes red blood cells?

• Fight infections and produce antibodies

• Carry oxygen to the body and remove carbon dioxide

• Help in clotting blood

• Transport nutrients

What is a major function of white blood cells?

• Transport oxygen

• Fight infections

• Form platelets

• Carry nutrients

How might a low white blood cell count affect the body?

• The body will have less oxygen

• The body will struggle to fight infections

• The body will lose energy quickly

• The blood will become thicker

Which of the following is a symptom of sickle cell anemia?

• Increased appetite

• Joint pain and fatigue

• Rapid healing of wounds

• Bright red blood

What muscle type is responsible for moving food through the digestive system?

• Skeletal muscle

• Smooth muscle

• Cardiac muscle

• Ligament muscles

Which muscle type pumps blood in the heart?

• Skeletal muscle

• Smooth muscle

• Cardiac muscle

• Voluntary muscle