Both the liver and kidneys are organs of the excretory system. How do the two organs work together to complete a task?

The liver converts nitrogenous wastes into urea, and the kidneys filter urea from the blood.

The kidneys convert nitrogenous wastes into urea, and the liver filters urea from the blood.

The kidneys filter urea from the blood to make urine, while the liver filters urea from blood to make lymph.

The liver filters urea from the blood and passes it to the kidneys, which eliminate the urea in urine.

Oxygen and carbon dioxide exchange between the circulatory system and the respiratory system. During this process, both gases diffuse across a moist membrane. What two structures does the membrane separate?

capillary (tiny blood vessels) and alveoli (air sacs in lungs)

Which system is responsible for making new individuals?

male and female reproductive systems

The human nervous system is made of a huge number of interconnected neurons. The two main divisions of the nervous system are the central nervous system (CNS) and the peripheral nervous system (PNS). Which describes a common pathway of nerve impulses through the divisions of the nervous system?

sensory neurons of the PNS → CNS → motor neurons of the PNS

CNS → sensory neurons of the PNS → motor neurons of the PNS

sensory neurons of the PNS → motor neurons of the PNS → CNS

motor neurons of the PNS → CNS → sensory neurons of the PNS

The adult human skeletal system consists of 206 bones, all of which are hard and sturdy. Which statement accurately describes the make-up of bones?

Bones are organs made of a variety of living tissues.

Bones are secretions that do not contain living cells or tissues.

Bones are organs made of one type of tissue only, and have a homogeneous consistency.

Bones are living tissues made of one type of cell only.

A scientist is using a light microscope to observe a sample of muscle tissue. By analyzing the cellular structure and organization of the muscle tissue, the scientist can identify which of these properties?

whether the muscle moved the skeleton, the heart, or another type of internal organ

how frequently the muscle was used

whether the muscle was located in the arms, legs, or torso

The brain of the nervous system and the endocrine glands of the endocrine system are similar to one another in certain ways. Both act to send messages to distant body parts. What is a significant difference of the activity of endocrine glands?

Endocrine glands send chemical messengers through the blood.

Endocrine glands send electrical signals through neural pathways.

The effects of endocrine glands tend to be short-lasting and easily reversible.

The effects of endocrine glands tend to involve only the muscular and skeletal systems.

CFA #2 Unit 3 Human Body Systems (21.2 & 21.3)

Authored by Brian Fast

Biology

9th - 12th Grade

NGSS covered

Used 15+ times

CFA #2 Unit 3 Human Body Systems (21.2 & 21.3)

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20 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which system is responsible for breaking apart food into molecules that cells can use?

circulatory system

digestive system

excretory system

lymphatic system

respiratory system

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which system is responsible for eliminating metabolic wastes from the body?

circulatory system

digestive system

excretory system

lymphatic system

respiratory system

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which system is responsible for delivering food and oxygen to cells, and removing wastes?

circulatory system

digestive system

excretory system

lymphatic system

respiratory system

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which system is responsible for “screening” fluids for microorganisms, and returning fluids to the blood?

circulatory system

digestive system

excretory system

lymphatic system

respiratory system

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which system is responsible for delivering oxygen to the blood, and removing carbon dioxide?

circulatory system

digestive system

excretory system

lymphatic system

respiratory system

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which is an example of mechanical digestion that occurs in the human digestive system?

Saliva in the mouth acts to moisten and break apart food molecules.

The muscular lining of the esophagus pushes food from the mouth to the stomach.

The muscular walls of the stomach act to churn food back and forth.

Small molecules, such as glucose, are absorbed into the blood from the small intestine.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Yasmine uses the model of a double pump to describe the human heart. Which statement about the human heart explains why Yasmine’s model is reasonable?

The heart has two chambers: one chamber for receiving blood and one chamber for pumping blood.

The heart has four chambers divided into two sides: one side for receiving blood and one side for pumping blood.

The heart has four chambers divided into two sides: one side for pumping blood to the lungs, and one side for pumping blood to the rest of the body.

The heart has two pairs of equal-sized chambers, and each pair pumps blood to approximately half of the body.

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CFA #2 Unit 3 Human Body Systems (21.2 & 21.3)

Which system is responsible for breaking apart food into molecules that cells can use?

Which system is responsible for eliminating metabolic wastes from the body?

Which system is responsible for delivering food and oxygen to cells, and removing wastes?

Which system is responsible for “screening” fluids for microorganisms, and returning fluids to the blood?

Which system is responsible for delivering oxygen to the blood, and removing carbon dioxide?

Which is an example of mechanical digestion that occurs in the human digestive system?

Yasmine uses the model of a double pump to describe the human heart. Which statement about the human heart explains why Yasmine’s model is reasonable?

Both the liver and kidneys are organs of the excretory system. How do the two organs work together to complete a task?

Organs of the lymphatic system include lymph nodes, the thymus, and the spleen. These organs are also part of what other body system?

Oxygen and carbon dioxide exchange between the circulatory system and the respiratory system. During this process, both gases diffuse across a moist membrane. What two structures does the membrane separate?

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