The Respiratory System

question 42

Multiple Choice

The respiratory system

• A) obtains O₂ from and eliminates CO₂ to the internal environment
• B) includes the heart and lungs
• C) helps regulate the pH of the internal environment by removing acid-forming CO₂ from the blood
• D) all of the these
• E) obtains O₂ from and eliminates CO₂ to the internal environment and helps regulate the pH of the internal environment by removing acid-forming CO₂ from the blood

Identify specific muscles based on their actions or descriptions given.

Conceptualize how muscles work in groups for efficient movement.

Understand the biomechanics involved in simple movements and muscle contractions.

Recognize the structural differences among muscle types and their implications for force generation and movement efficiency.

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Definitions:

Organic Matter

Material derived from living organisms, including plants, animals, and their by-products, decomposing in the environment.

Weathered Rock

Rock that has undergone physical or chemical breakdown due to atmospheric or biological elements, leading to changes in texture, composition, or color.

O Horizon

The O Horizon is the uppermost layer of soil, primarily composed of organic matter such as decomposing leaves and other plant material, crucial for nutrient cycling and soil fertility.

C Horizon

The layer of soil that consists of weathered rock and little organic material, often serving as the foundation of the soil profile.