Unit 2 Marathon Runner Review

Homeostasis

• allows for a wildly fluctuating internal environment

• is a myth

• is the maintenance of a relatively stable internal environment through negative feedback

• is the maintenance of a relatively stable external environment through positive feedback

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NGSS.HS-LS1-3

Why does pulse rate increase during exercise?

• Oxygen and carbon dioxide must be removed from the body ASAP

• Gas exchange must happen more quickly than when a person is at rest

• Oxygen must be moved to the lungs and carbon dioxide must be moved to cells more quickly

• Carbon dioxide must be moved to the kidneys to be excreted

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NGSS.HS-LS1-3

If a person's blood cells shrivel (shrink) their blood is likely ____ in comparison to the cell.

• isotonic

• hypotonic

• hypertonic

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NGSS.HS-LS1-3

Rapid growth during puberty causes your body to release more and more growth hormones. As you grow, more and more growth hormones are released until puberty is reached, and then the hormones stop.

• Positive Feedback Response
• Negative Feedback Loop 

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NGSS.HS-LS1-3

If the calcium in your blood decreases below homeostasis levels, a gland in the brain will sense the decrease and send a chemical message to your bones. Your bones will release calcium into the blood, bringing blood calcium levels back up. This is an example of what type of feedback?

• Positive Feedback Response

• Negative Feedback Loop

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NGSS.HS-LS1-3

The illustration shows the tiny structure that makes up the lungs of the respiratory system. Each lung contains millions of these structures. What is the structure and its function?

• bronchi, which allow movement

• stomach, which allows digestion of food

• alveoli, which exchange oxygen and carbon dioxide through simple diffusion

• hypothalamus, which processes sensory information

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NGSS.MS-LS1-3

The graph shows how pulse rate changes with exercise.Which of the following best explains how body systems worked together to create the results shown on the graph?

• As the body is able to exercise using the musculoskeletal system, the circulatory system pumps more blood and oxygen throughout the body. The respiratory system takes in more oxygen from the environment and releases carbon dioxide.

• As the body breaks down food using the digestive system, the nervous system communicates that the body needs to prevent weight gain by exercising using the musculoskeletal system.

• As the body uses its excretory system to eliminate wastes, the digestive system takes in more nutrients used by the endocrine system for growth and development.

• As the body’s nervous and endocrine systems are stimulated by exercise, the body’s circulatory system is less able to regulate body temperature.

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NGSS.HS-LS1-2

NGSS.HS-LS1-3

The systems of the human body work together to maintain homeostasis. Which of the following statements describes how the human body maintains homeostasis within the circulatory system?

• The kidneys collect and store the urine which is then released into the blood stream.

• Blood vessels expand to help the body shed heat and sweat is released through the skin to maintain a constant body temperature.

• The lungs remove oxygen from red blood cells and allow carbon dioxide into the red blood cells.

• Veins and arteries supply all parts of the body with nutrient-poor blood and remove the nutrient-rich blood.

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NGSS.HS-LS1-3

Research question: does the distance a person kicks a soccer ball effect how well they will do on their math test.  What is the dependent variable?

• How far they kick the soccer ball
• who the person is
• how well they do on the math test
• Type of soccer ball.

Tags

CCSS.6.EE.C.9

Mr. McNiece wanted to see how different types of music affected students' pulse rates. She played different types of music: heavy metal, rap, R&B, alternative, pop, country, and classical music. Identify the independent variable.

• classical music resulted in the highest pulse rate
• high pulse rate
• pulse rate
• types of music