Circulatory System

Question 1

A network responsible for transporting blood, oxygen, nutrients, hormones, and waste products throughout the body

Answer 1

Circulatory system

Question 2

Organ that pumps, facilitating the consistent movement of circulating fluid

Answer 2

Heart

Question 3

Contraction phase of the heart

Answer 3

Systole

Question 4

Relaxation phase of the heart

Answer 4

Diastole

Question 5

Moves blood from the upper part of the heart to the lower part of the heart (ventricles)

Answer 5

Atrium

Question 6

Pumps blood out of the heart and into the systemic or pulmonary circulation

Answer 6

Ventricle

Question 7

Tubular structure that acts as a heart

Answer 7

Dorsal vessel

Question 8

Delivers blood forward to body tissues

Answer 8

Ventral vessel

Question 9

Ostia

Answer 9

Small openings in the heart

Question 10

Assists in pumping blood to specific areas

Answer 10

Accessory hearts

Question 11

Blood vessel with thick elastic walls to withstand the high pressure of the blood coming out of the heart. Has a smaller lumen and carries oxygenated blood away from the heart

Answer 11

Artery

Question 12

Blood vessel with thinner walls and less elasticity. It has a larger lumen and contains valves. It carries deoxygenated blood back to the heart

Answer 12

Veins

Question 13

Blood vessel which facilitates the exchange of gases, nutrients and waste products with tissues and connects arteries and veins

Answer 13

Capillaries

Question 14

Cells that transport oxygen via hemoglobin

Answer 14

Red blood cells (RBCs)

Question 15

Cells that fight infections and support immunity

Answer 15

White blood cells (WBCs)

Question 16

Aids in blood clotting

Answer 16

Platelets

Question 17

The liquid component carrying nutrients, hormones and waste in the blood

Answer 17

Plasma

Question 18

The circulating fluid in invertebrates with open circulatory systems

Answer 18

Hemolymph

Question 19

The main body cavity in animals with open circulatory systems

Answer 19

Hemocel

Question 20

Circulation where deoxygenated blood travels from the heart to the lungs where it gains oxygen

Answer 20

Pulmonary circulation

Question 21

Circulation where oxygenated blood is pumped from the heart to the rest of the body

Answer 21

Systemic circulation

Question 22

Circulation where deoxygenated blood returns to the heart via veins to complete the cycle

Answer 22

Return to the Heart

Question 23

Type of circulatory system where blood is contained within the blood vessels and is mostly found in vertebrates

Answer 23

Closed circulatory system

Question 24

Type of circulatory system where the blood or hemolymph is not confined to vessels but directly bathes the organs in an open cavity (hemocoel)

Answer 24

Open circulatory system

Question 25

Carry oxygen throughout the body

Answer 25

Red blood cells (RBCs) or erythrocytes

Question 26

Cells that help in immune function

Answer 26

White blood cells or leukocytes

Question 27

WBC with three or more lobes joined by a threadlike structure. Helps in bacterial attack

Answer 27

Neutrophil

Question 28

WBC with two lobes. Helps with inflammation

Answer 28

Eosinophil

Question 29

WBC with an s-shaped lobe

Answer 29

Basophil

Question 30

Spherical WBC with a large nucleus. Produces antibodies

Answer 30

Lymphocytes

Question 31

Big WBC cell, bean-shaped nucleus. Helps with phagocytic action (eats pathogen), motile

Answer 31

Monocytes

Question 32

Helps with blood clotting

Answer 32

Blood platelets or thrombocytes