Understanding Tissues, Organ Systems, and Feedback Loops

During a marathon, which type of tissue in the athletes' bodies is primarily responsible for pumping blood to supply oxygen and nutrients?

• Nervous tissue

• Connective tissue

• Muscle tissue

• Epithelial tissue

Imagine you are a nutritionist. You need to explain to a client how their body gets the energy from the food they eat to their muscles. Which organ system would you describe as primarily responsible for transporting oxygen, nutrients, and waste products throughout the body?

• Digestive system

• Circulatory system

• Respiratory system

• Excretory system

Imagine you are designing a protective cover for a new smartphone. What is the main function of the material you would choose, akin to the epithelial tissue in the human body?

• To connect and support different parts of the smartphone

• To control the smartphone's functions with electrical signals

• To cover the smartphone's surfaces and line its internal components

• To allow the smartphone to contract and produce movement

In a home heating system using a thermostat, when the temperature drops below the set point, the response of the system is to:

• Enhance the original stimulus, as in positive feedback.

• Ignore the original stimulus to maintain homeostasis

• Reverse the original stimulus, as in negative feedback

• Maintain the original stimulus without a response

During a significant injury, which process exemplifies a positive feedback loop in the human body?

• Regulation of blood sugar levels

• Blood clotting

• Body temperature regulation

• Water balance regulation

Imagine a busy city and its traffic control system. The nervous system and the endocrine system are similar to this scenario in that they both:

• Produce physical movement

• Provide structural support

• Regulate functions through signals

• Transport substances throughout the body

During a marathon, which organ system is primarily responsible for removing the increased levels of waste products from the runners' bloodstream?

• Respiratory system

• Digestive system

• Excretory system

• Circulatory system

In the context of human body tissues, connective tissue is unique because it:

• Consists of cells that are densely packed together

• Contains a significant amount of extracellular matrix

• Mainly functions to transmit electrical impulses

• Does not play a role in protecting the body

Imagine you are building a robot. Which of the following is NOT a function of the robot's skeletal structure?

• To provide support for the robot's body

• To protect the robot's internal circuitry

• To enable the robot to move

• To regulate the robot's internal temperature

Consider a scenario where a person is jogging in cold weather. Homeostasis in this context refers to:

• The body's ability to change its internal environment to adapt to the cold

• The body's ability to maintain a relatively stable internal temperature despite the cold weather

• The process by which the body's systems stop functioning due to the cold

• The body's response to the cold by changing its internal conditions drastically