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WorksheetsCirculatory Digestive Respiratory
Total questions: 21
Worksheet time: 1hrs 5mins
Where does the digestion of food begins?
Stomach
Esophagus
Mouth
Small intestine
Food is chewed in the mouth and mixed with _________?
the liver
gastric juices
saliva
bile
Food travels down the __________ into the stomach.
small intestine
gallbladder
esophagus
trachea
Food leaves the stomach and travels to the ___________.
small intestine
large intestine
mouth
liver
Waste foods are separated from solids and liquids in the __________________.
small intestine
large intestine
liver
stomach
_________ are absorbed into the blood.
saliva
gastric juices
bile
nutrients
Place the following events in sequence:
A) Food enters your large intestines
B) Food enters your small intestines
C) Food enters your esophagus
A, B, C
C, B, A
C, A, B
B, A, C
What is this organ?
Liver
Kidney
Pancreas
Stomach
Where does absorption primarily take place?
Stomach
Small intestine
Large intestine
Gall bladder
Which of the following are considered jobs of the digestive system? (Check all that apply)
Ingestion
Digestion
Absorption
Elimination
The circulatory system (check all that apply)
transports nutrients, oxygen, carbon dioxide
regulates body temperature
carries waste to the kidneys
transports white blood cells
These carry blood away from the heart and are thick-walled.
arteries
capillaries
veins
These carry blood to the heart and have thinner walls.
arteries
capillaries
veins
These are the site of gas exchange between blood and various parts of the body.
arteries
capillaries
veins
This body systems takes in oxygen gas and removes carbon dioxide gas.
digestive
respiratory
circulatory
What is the name of structure 8?
nose
lung
mouth
trachea
What is the name of structure 11?
bronchi
lung
alveoli
trachea
What is the name of structure 4?
nose
lung
mouth
trachea
The large muscle that contracts and relaxes and moves air in and out of the lungs.
epiglottis
alveoli
diaphragm
trachea
Erythrocytes in Blood
The cell found in greatest abundance in blood is the erythrocyte. Erythrocytes are counted in millions in a blood sample: the average number of red blood cells in primates is 4.7 to 5.5 million cells per microliter.
Erythrocyte Structure
The principal job of an erythrocyte is to carry and deliver oxygen to the tissues.
Function of Erythrocytes
Erythrocytes are specialized cells with a unique biconcave shape that allows for efficient oxygen transport. They lack a nucleus and most organelles, maximizing their capacity to carry oxygen.
Blood Composition
In addition to erythrocytes, blood also contains other types of cells such as leukocytes and platelets, as well as plasma which carries nutrients, hormones, and waste products.
Erythrocytes lack a (a) and most organelles, maximizing their capacity to carry oxygen.
What is the unique shape of erythrocytes that allows for efficient oxygen transport?
Spherical
Cuboidal
Biconcave
Irregular
What is the principal job of an erythrocyte?
Carry and deliver oxygen to the tissues
Transport carbon dioxide to the lungs
Regulate blood pressure
Produce antibodies
What is the average number of red blood cells in primates per microliter?
What else is found in blood, in addition to red blood cells?
Leukocytes
Platelets
Plasma
Hemoglobin
