PLTW Human Body Systems Exam

Which system includes the brain, spinal cord, and nerves?

• Circulatory

• Nervous

• Respiratory

• Digestive

Which types of muscle tissue are striated?

• smooth and skeletal

• smooth and cardiac

• skeletal and cardiac

• only the cardiac

Which labeled structure is the occipital lobe?

• 1

• 2

• 3

• 4

Which structure is the site of gas exchange in the lungs?

• Bronchi

• Trachea

• Alveoli

• Diaphragm

Melanin is produced to:

• Protect against UV radiation

• Enhance skin color

• Regulate body temperature

• Aid in vitamin D synthesis

How are your leg muscles similar to your heart muscle?

• they contract

• they are both made of smooth muscle

• they both pump blood

• they are both under voluntary control

Reflexes differ from voluntary actions because they:

• Are slower and require conscious thought

• Are faster and automatic

• Are always painful and involuntary

• Require practice and learning

What part of the brain is responsible for vision?

• temporal lobe

• parietal lobe

• occipital lobe

• brain stem

This part of my brain is related to balance and muscle coordination

• cerebellum

• cerebrum

• brainstem

• hippocampus

The sliding filament theory describes:

• Muscle contraction

• Nerve impulse transmission

• Bone growth

• Blood circulation