Circulatory System

Which structure carries oxygenated blood to the body?

Which structure represents the chamber of the heart that receives oxygenated blood directly from the lungs?

An increase in heart rate will most likely result in

• a decrease in metabolic rate

• an increase in pulse rate

• an increase in cell division

• a decrease in body temperature

State one way the data would most likely be different if the pulse rates were collected immediately after exercising instead of during lunch.

• The pulse rates would likely be higher immediately after exercise.

• The pulse rates would likely be lower immediately after exercise.

• The pulse rates would remain the same at both times.

• There would be no measurable pulse rate immediately after exercise.

Which statement best describes a change that usually takes place in the human body when the heart rate increases as a result of exercise?

• More oxygen is delivered to muscle cells.

• Blood cells are excreted at a faster rate.

• The rate of digestion increases.

• No hormones are produced.

The organ system in humans that is most directly involved in the transport of oxygen is the (a)   system.

• digestive
• nervous
• excretory
• circulatory

Which body system is correctly paired with its function?

• facilitates gas exchange in the body

• nervous

• breaks down food and absorbs nutrients

• circulatory

• processes sensory information and controls movements

• excretory

• transports materials for energy release

• respiratory

• removes waste from the body

• digestive

Identify one specific substance necessary for muscle activity that is delivered to muscles more effectively as a result of increased heart rate.

• Carbon Dioxide

• Oxygen

• Hormones

• Electrolytes

When people exercise, their body cells build up more waste quickly. Which two body systems work together to remove these wastes from their cells?

• immune and endocrine

• digestive and skeletal

• respiratory and circulatory

• circulatory and digestive

Which two body systems were most actively involved in this experiment?

• A. respiratory and immune

• B. digestive and endocrine

• C. respiratory and circulatory

• D. immune and circulatory