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WorksheetsBIO270 Chapter 3 Circulatory System
Total questions: 25
Worksheet time: 16mins
Which of the following is NOT the functions of circulatory system?
Transporting oxygen from the lungs to the cells
Transporting carbon dioxide from the cells to the lungs
Collect heat around the body
Circulating hormones around the body from the glands where they are made to their target organs
Why diffusion alone is sufficient to allow adequate exchange of materials (e.g water and nutrients) in simple animals such as jelly fish?
Have a body wall only two cell thick that encloses a gastrovascular cavity
Have a body wall only one cell thick that encloses a gastrovascular cavity
Have thick body wall and need specialized internal transport system
Have thick body wall and do not need a specialized internal transport system
Three basic components in circulatory systems are:
A circulatory fluid
A set of tubes
A muscular pump
A malphigian tubule
Which of the following describes open circulatory system?
The blood bathes the organ directly
Less energy used
Also function as hydroskeleton in some in some invertebrates
Have one or more hearts that pump blood into large vessels that coursing through organs
Chemical exchange between the hemolymph and cells occurs in the______ and _______.
(a)
Which of the following describes closed circulatory system?
Blood is confined to vessels
The blood is distinct from the interstitial fluid
Require less enery
Materials are exchanged by diffusion between the blood and the interstitial fluid bathing the cells
What are the similarities between the arteries, veins and capillaries?
Built of similar tissues
Similar functions
Have three similar layers
Transport similar types of blood
The function of arteries are to (a) .
Which of the TWO characteristics of the capillaries that enhance chemical and gases exchange between the blood and interstitial fluid?
Have valve
Have elastic tissues
Have thin walls
Consist only endothelium and its basement membrane
What is the function of the valve in the blood vessels?
Allow rapid gaseous and chemical exchange between blood and cell by diffusion
Transport blood from heart to tissues
Prevent backflow of blood
Transport blood from tissue to heart
Which of the following cellular elements that play role as function in blood clotting?
Eryhtrocytes
Leukocytes
Platelets
Plasma
Which of the following describes single circulation?
Has one atrium and one ventricle
The blood passes through the heart once
Commonly found in amphibians
Commonly found in fishes
Which of the following describes double circulation of amphibians?
Have two atria and one ventricle
Have septum in the heart
Both deoxygenated and oxygenated blood are mix in the heart
Which of the THREE features of the heart in reptiles that make the oxygen-poor and oxygen-rich blood less mix in the heart?
Have arterial valves
Have elastic and muscular arteries walls
Have two arteries leading from heart to the systemic circuit
Have incomplete septum
What is the structure in the heart of the mammals and birds that prevent mixing of oxygenated and deoxygenated blood?
Septum
Arteries
Capillaries
Valve
There are two ways of oxygen being transported in the blood, which are
Dissolved in the interstitial fluid
Dissolved in the plasma
Bound to hemoglobin
Formed bicarbonate
Each of the four iron atoms in one molecule of hemoglobin can combine loosely with
One atom oxygen
One molecule of oxygen
Two molecule of oxygen
Four molecules of oxygen
What is respiratory pigment for arthropods?
Hemocyanin
Hemolymph
Hemerythrin
Hemoglobin
State which cell contains hemoglobin
Neutrophils
Erythrocytes
Lymphocytes
Mast cells
Describe the nature of movement of oxygen within the blood and surrounding tissues
Moves down its electrochemical gradient
Moves down its partial pressure
Requires protein channels to diffuse across membranes
Moves out into the alveolar space from the capillaries
This best describes positive cooperativity of hemoglobin
As 1 O2 binds to a heme group, it causes a sudden shift of polarity, attracting more O2
As 1 O2 binds to a heme group, a conformational change occurs, making it more likely for additional O2 to bind
As 1 O2 binds to a heme group, hemoglobin becomes slightly less hydrophilic
As 1 O2 binds to a globin group, the binding site of O2 within the molecule becomes more exposed
Which is an accurate description of the overall environment between blood cells and surrounding tissues?
The PO2 in the capillaries is lower than in surrounding tissues
The PO2 in the capillaries is higher than in the surrounding tissues
State the curve of this graph
Exponential
Bell-shaped
Parabolic
Sigmoidal
In what point in the graph shows the condition of Hb within the alveoli?
Point 1
Point 2
Point 3
What explains the steep slope of the curve?
Binding of O2 within the heme groups
O2 loading into hemoglobin
Unloading of O2 from hemoglobin
Positive cooperativity
