Tiny air sacs in the lungs that are the site of gas exchange between the lungs and blood.

• alveoli​
• relax
• diaphragm​
• nose

A wide muscle that separates the chest cavity from the abdominal cavity and aids in the inflation of the lungs.

• diaphragm​
• heart
• nose
• trachea

What are the two classifications of muscles in your body?

• Voluntary and Controllable
• Flabby and Strong
• Involuntary and Voluntary
• Hard and soft

Muscles that oppose one another are

• synergist

• hateful

• prime movers

• antagonists

the only energy source that can be used to directly power muscle activity

• acetylcholine (Ach)
• ATP
• cross bridges
• neuromuscular junction

Tags

NGSS.HS-LS1-7

What muscle is the arrow pointing to?

• Pectoralis (Pecs)

• Biceps

• Triceps

• Lats

• Quadriceps
• Satorius
• Hamstring
• Gastronecmius

• Trapezius
• Gluteals
• Deltoid
• Hamstring

• Hamstrin

• Quadricep

• Tibialis Anterior

• Gastrocnemius

These muscles that make up someone's "six pack" are really called what?

• extermal obliques

• gluteus maximus

• rectus abdominus

• gastrocnemius