In the model that you built of the respiratory system, what structures did the straws represent?(1 point)

In the model that you built of the respiratory system, the straws represent **the trachea and bronchi**. The straws simulate the passageways through which air travels from the trachea into the lungs.

Your hand jerks up after touching a hot stovetop. Which two organ systems are most responsible for your reaction?(1 point)

Responses

immune and muscular
immune and muscular

nervous and muscular
nervous and muscular

circulatory and muscular
circulatory and muscular

nervous and respiratory

The two organ systems most responsible for your reaction of your hand jerking up after touching a hot stovetop are the **nervous and muscular** systems. The nervous system detects the heat and sends a signal to the muscles to retract your hand quickly.

The diaphragm can be classified as part of which two organ systems?(1 point)

Responses

immune and skeletal
immune and skeletal

muscular and nervous
muscular and nervous

muscular and respiratory
muscular and respiratory

circulatory and respiratory
circulatory and respiratory

The diaphragm can be classified as part of the **muscular and respiratory** organ systems. It is a muscle that plays a crucial role in the process of breathing.

Question

To which part of the nervous system do the cranial nerves belong?(1 point)
Responses

the peripheral nervous system
the peripheral nervous system

the cerebrum
the cerebrum

spinal nerves
spinal nerves

the central nervous system

The cranial nerves belong to **the peripheral nervous system**. They emerge directly from the brain and brainstem and are responsible for transmitting signals to and from various parts of the head and neck.

​If the symbol “→” means “make up”, which of the following answer choices correctly demonstrates the relationship between the given terms?​(1 point)

Responses

Organ Systems → Organs → Cells → Tissues​
Organ Systems → Organs → Cells → Tissues​

​Organ Systems → Organs → Tissues → Cells​
​Organ Systems → Organs → Tissues → Cells​

​Cells → Tissues → Organs → Organ Systems​
​Cells → Tissues → Organs → Organ Systems​

​Tissues → Organ Systems → Cells → Organs​

The correct answer choice that demonstrates the relationship between the given terms, using “→” to mean “make up,” is:

**Cells → Tissues → Organs → Organ Systems**

This sequence illustrates how cells make up tissues, tissues make up organs, and organs make up organ systems.