circulatory system

Question 1

Gills

Answer 1

same as lungs– air or water comes in close contact with blood to diffuse o2 and co2 across concentration gradients

Question 2

Capillaries

Answer 2

exchange blood good blood and used up non oxygenated blood between blood and tissues– also capillaries are the end of arteries

Question 3

Right Atrium

Answer 3

gets blood from superior vena cava

Question 4

PULMONARY viens

Answer 4

pulmonary veins deliver oxygenated blood from the lungs to the left atrium

Question 5

pulmoinary arteries

Answer 5

blood leaves the right ventricle via this and is then pumped to the lungs

Question 6

left atruim

Answer 6

oxygenated blood enters this

Question 7

left ventricle

Answer 7

gets blood from left atrium

Question 8

pericardium

Answer 8

the membrane enclosing the heart

Question 9

coronary arteries

Answer 9

transports oxygenated blood to the heart are the veins that wrap around the entire heart?

Found on the surface of the heart. (the veins)
The coronary artery delivers oxygenated blood to the heart. it leaves the aorta shorty after it exits the left ventricle.

Question 10

ventricular septum

Answer 10

separates the ventricles / the lower heart from one another

Question 11

right atrioventricular valve (tricuspid)

Answer 11

separate the atria

Question 12

left atrioventricular valve (bicuspid)

Answer 12

separate the atria

Question 13

chordae tendinae

Answer 13

connect the papillary muscles to the tricuspid valve and the bicuspid valve in the heart

Question 14

aortic semilunar valve

Answer 14

on the left side of the heart– found at the base of the artieries. receive blood from ventricles. seperate heart chambers and prevent back flow of blood

Question 15

pulmonary semilunar valve

Answer 15

on the right side of the heart– found at the base of the artieries. receive blood from ventricles. seperate heart chambers and prevent back flow of blood

Question 16

ductus arteriosis

Answer 16

carries blood rich in oxygen

The fetus has three anatomical modifications:
ductus venous, foramen ovale, ductus arteriosis.

Fetal circulation bypasses the lungs by shunting any blood that reaches the right ventricle and pulmonary artery to the dorsal aorta via the ductus arteriosus.

Question 17

ductus venosis

Answer 17

delivers blood directly to the liver and vena cava

The fetus has three anatomical modifications:
ductus venous, foramen ovale, ductus arteriosis.

Delivers some blood directly to the liver, and the rest of the blood to the caudal (aka) inferior) vena cava, which then delivers blood to the right atrium of the fetus.

Question 18

foramen ovale

Answer 18

small openeing between the left and right atria closes at birth

Question 19

sinoatrial node (SA node)

Answer 19

right atrium

Question 20

atrioventricular node (AV node)

Answer 20

base of the atria

Question 21

purkinje fibers

Answer 21

av node connected to these fibers that run to the bottom of the ventricles

Question 22

electrocardiogram

Answer 22

the change of potential recored by the electrodes

Question 23

arteries

Answer 23

cary blood away from the heart

Question 24

veins

Answer 24

carry de oxygenaed blood towards the heart

Question 25

right ventricle

Answer 25

gets blood from right atrium

Question 26

pericardial sac

Answer 26

double walled sac containing the heart

Question 27

brachiocephalic vein subclavian vein external jugular vein internal jugular vein

Answer 27

the vein that brings blood back to heart from head and upper limbs a little unclear but one of the big veins in your neck also deals with returning blood to the heart from upper extremeities external jugular = external blood from parts of the face internal jugular= brain blood

Question 28

anterior and posterior vena cava

Answer 28

anterior head down posterior feet up just the biggest veins carrying things back to the heart

Question 29

renal vein

Answer 29

drains the kidney

Question 30

umbilical vein

Answer 30

oxygenated blood from placenta to baby