The Immune System + Vessels

Blood pressure is the highest in the

• venules

• veins

• arteries

• capillaries

• lymphatic capillaries

Tags

NGSS.HS-LS1-3

Functionally, there are no valves in arteries (as opposed to in veins) because

• Valves direct blood only toward the heart and arterial blood passes away from the heart.

• Valves would tear apart from the high arterial pressure.

• Arteries get more atherosclerosis, so valves would cause lethal blood clotting.

• The blood pressure in arteries is high enough that there is no backflow of blood.

Which of the following would best explain why most people are sick more often as children than as adults in their 20s through 50s?

• The immune system does not appear until the preteen years.

• In children, the thymus is so active in fighting bacteria that it produces stronger symptoms of disease.

• Because of their small size, children's bodies cannot contain as much lymphoid tissue as those of adults

• During childhood, we build up many varieties of memory lymphocytes, which provide immunity to more and more antigens during adulthood

Lymphatic vessels perform all of the following functions EXCEPT which one?

• returning excess tissue fluid to the bloodstream

• returning leaked blood proteins to the bloodstream

• transporting digested fats

• carry oxygen and metabolic waste throughout the body.

• contains lymph

The systemic circuit supplies all of the following except

• oxygenated blood to the brain.

•  oxygenated blood to the tissue of the lungs.

• oxygenated blood to the muscles of the upper extremity.

• deoxygenated blood to the lungs for gas exchange.

• oxygenated blood to the entire body

Identify the type of cells that directly destroy infected cells, abnormal cells, and cancerous cells.

• B memory cells

• T_c memory cells

• B effector cells

• T_h effector cells

• T_c effector cells

Lymphoid organs located in the mucosal lining of the pharynx

• tonsils

• salivary glands

• uvulas

• tongue

• epiglottis

Two-lobed lymphoid organ located posterior to the sternum.

• spleen

• thymus

• lacteals

• heart

• tonsils

Identify which specific cell assists in 'sounding the alarm' for the specific (or adaptive) immune response

• plasma cell

• effector B cells

• memory T_c cells

• effector T_c cells

• T_h cells

Identify the specific type of cell that produces free floating antibodies

• leukocytes

• memory T_c cells

• plasma cells

• memory T_h cells

• macrophages