Chapter 8 - Special Senses: The Eye and Vision

Which artery is the largest in the body?

Aorta

Which artery serves the heart?

Coronary arteries

Where does the ascending aorta leave from?

Left ventricle

Which artery is the first branch of the abdominal aorta?

Celiac trunk Signup and view all the answers

Which artery branches into the vertebral artery?

Subclavian artery Signup and view all the answers

Which artery becomes the axillary artery in the axilla?

Subclavian artery Signup and view all the answers

What percentage of blood makes up the formed elements?

45 percent Signup and view all the answers

Which component of blood is mostly responsible for carrying nutrients, wastes, and hormones?

Erythrocytes Signup and view all the answers

What is the main function of the buffy coat in blood?

Containing leukocytes and platelets Signup and view all the answers

What is the color of oxygen-poor blood?

Dull red or purple Signup and view all the answers

What is the approximate volume of blood in a healthy adult?

~5-6 liters Signup and view all the answers

Which of the following is NOT a component of plasma?

Leukocytes Signup and view all the answers

What is the function of tears?

To cleanse, protect, moisten, and lubricate the eye Signup and view all the answers

Which structure in the eye is responsible for preventing light from scattering?

Choroid Signup and view all the answers

Which of the following structures forms a transparent layer in the eye?

Cornea Signup and view all the answers

Where is the lacrimal gland located?

On the lateral end of each eye Signup and view all the answers

Which of the following statements about the lens is true?

The lens divides the eye into aqueous and vitreous humor chambers Signup and view all the answers

What do ciliary glands secrete?

Oily lubrication for eyelid edges Signup and view all the answers

Which muscle is responsible for depressing and rotating the eye to the left?

Superior oblique muscle Signup and view all the answers

What is the primary function of the fibrous layer of the eyeball?

To help maintain shape of eyeball Signup and view all the answers

Where does the choroid contain a pigment to prevent light scattering?

In the ciliary body Signup and view all the answers

What is the main function of the extrinsic eye muscles?

To move and hold the eyeball in place within the orbit Signup and view all the answers

What is the function of the cardiovascular system?

To transport oxygen and nutrients to cells Signup and view all the answers

Which blood type can receive blood from any Rh+ blood types?

Type O- Signup and view all the answers

What can happen if an Rh-negative mother carries an Rh-positive baby during pregnancy?

The mother's immune system attacks the baby's blood cells Signup and view all the answers

What is the primary cause of hemolytic disease of the newborn?

Mismatched blood types between mother and baby Signup and view all the answers

Which component of blood typing is used to determine a person's blood group?

The presence or absence of antigens A and B Signup and view all the answers

What is the consequence of receiving Rh+ blood as an Rh-negative individual?

The immune system becomes sensitized to produce antibodies Signup and view all the answers

How does physiological jaundice occur in infants?

When the liver cannot eliminate hemoglobin breakdown products quickly enough Signup and view all the answers

What is the primary function of antigens in human blood groups?

To recognize foreign substances in the body Signup and view all the answers