BIO 1002 EXAM 4 POMARICO LSU
EXAM QUESTIONS AND ANSWERS 2026
VERIFIED.
2 Types of circulatory systems - ANS 1. Open
2. Closed
Circulatory systems have 3 major parts: - ANS 1. A fluid that circulates (blood)
2. A channel (vessels) that the fluid circulates through
3. A pump (heart) to keep the fluid moving
In the open circulatory system, part of the "channel" that the fluid circulates through is an open
space called the... - ANS Hemocoel
7 Major Functions of the Vertebrate Circulatory System - ANS 1. Transport of oxygen to the
tissues
2. Transport of the nutrients to the tissue
3. Transport of waste from the tissues
4. Distribution of hormones
5. Regulation of body temperature (homeostasis)
6. Prevention of blood loss (clotting)
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,7. Protection from invaders (immune system)
Type of heart design in fish - ANS 2-chambered heart
Type of heart design in amphibians and reptiles - ANS 3-chambered heart
Type of heart design in birds and mammals - ANS 4-chambered heart
Blood goes from ____________ to _______________ - ANS atrium, ventricle
In the 4 CHAMBERED HEART, the right ventricle and left atrium are used for... -
ANS Pulmonary circulation
Pulmonary circulation is used for pumping blood to and receiving blood back from the... -
ANS Lungs
In the 4 CHAMBERED HEART, the left ventricle and right atrium is used for... - ANS Systemic
circulation
Systemic circulation is used for pumping blood to and receiving blood back from the... -
ANS Body
The pumping action of the 4 CHAMBERED HEART makes up a... - ANS Cardiac cycle
The cardiac cycle is the alternating ________________ and ___________________ of the heart
chambers - ANS Contraction; Relaxation
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, Cardiac Cycle - ANS 1. The 2 atria contract pumping blood into the ventricles
2. A fraction of a second later, Systole
3. Diastole
Systole - ANS When the 2 ventricles contract and force blood into the arteries
Diastole - ANS When both chambers relax briefly
Blood pressure is shown by ______________ pressure over _______________ pressure. -
ANS Systolic; Diastolic
The heart has 4 one way valves to ensure __________________ flow. They are ... and ... -
ANS Unidirectional
2 Atrioventricular valves; 2 Semilunar valves
Why the specific valves are one-way - ANS Pressure in one direction opens the valve, while
pressure in the reverse direction closes them tightly
Tricuspid Valve - ANS Separates the right ventricle and atrium
Bicuspid Valve - ANS Separates the left ventricle and atrium
Types of atrioventricular valves (2) - ANS 1. Tricuspid
2. Bicuspid
@COPYRIGHT ALL RIGHTS RESERVED PAGE 3 OF 20
EXAM QUESTIONS AND ANSWERS 2026
VERIFIED.
2 Types of circulatory systems - ANS 1. Open
2. Closed
Circulatory systems have 3 major parts: - ANS 1. A fluid that circulates (blood)
2. A channel (vessels) that the fluid circulates through
3. A pump (heart) to keep the fluid moving
In the open circulatory system, part of the "channel" that the fluid circulates through is an open
space called the... - ANS Hemocoel
7 Major Functions of the Vertebrate Circulatory System - ANS 1. Transport of oxygen to the
tissues
2. Transport of the nutrients to the tissue
3. Transport of waste from the tissues
4. Distribution of hormones
5. Regulation of body temperature (homeostasis)
6. Prevention of blood loss (clotting)
@COPYRIGHT ALL RIGHTS RESERVED PAGE 1 OF 20
,7. Protection from invaders (immune system)
Type of heart design in fish - ANS 2-chambered heart
Type of heart design in amphibians and reptiles - ANS 3-chambered heart
Type of heart design in birds and mammals - ANS 4-chambered heart
Blood goes from ____________ to _______________ - ANS atrium, ventricle
In the 4 CHAMBERED HEART, the right ventricle and left atrium are used for... -
ANS Pulmonary circulation
Pulmonary circulation is used for pumping blood to and receiving blood back from the... -
ANS Lungs
In the 4 CHAMBERED HEART, the left ventricle and right atrium is used for... - ANS Systemic
circulation
Systemic circulation is used for pumping blood to and receiving blood back from the... -
ANS Body
The pumping action of the 4 CHAMBERED HEART makes up a... - ANS Cardiac cycle
The cardiac cycle is the alternating ________________ and ___________________ of the heart
chambers - ANS Contraction; Relaxation
@COPYRIGHT ALL RIGHTS RESERVED PAGE 2 OF 20
, Cardiac Cycle - ANS 1. The 2 atria contract pumping blood into the ventricles
2. A fraction of a second later, Systole
3. Diastole
Systole - ANS When the 2 ventricles contract and force blood into the arteries
Diastole - ANS When both chambers relax briefly
Blood pressure is shown by ______________ pressure over _______________ pressure. -
ANS Systolic; Diastolic
The heart has 4 one way valves to ensure __________________ flow. They are ... and ... -
ANS Unidirectional
2 Atrioventricular valves; 2 Semilunar valves
Why the specific valves are one-way - ANS Pressure in one direction opens the valve, while
pressure in the reverse direction closes them tightly
Tricuspid Valve - ANS Separates the right ventricle and atrium
Bicuspid Valve - ANS Separates the left ventricle and atrium
Types of atrioventricular valves (2) - ANS 1. Tricuspid
2. Bicuspid
@COPYRIGHT ALL RIGHTS RESERVED PAGE 3 OF 20
