Body Organization - 2

Body Organization - 2

Multiple Choice

Jamel loves to climb mountains and hike long distances. He prefers to pack light, and often opts for an energy bar. It is a glucose-based confection flavored with peppermint. It provides Jamel with 9.5 g of carbohydrates per 10 g serving. Because he is often gone for long periods of time, he always makes sure that he packs the right foods for his trips. Jemel eats his energy bar and it goes through his digestive system. Which level of body organization does the digestion pathway represent?

• cell

• organ

• organ system

• tissue

​Organ System

​An organ system is a group of organs that work together, performing major functions for the body. This pathway contains several organs that make up the organ system. Cells contain organelles are specialize to perform their function, so A is not correct. An organ is a body structure composed of different kinds of tissue that work together. Each organ has a specific function in the body, so B is not correct. Tissues are groups of cells that perform the same function, so D is not correct.

Multiple Choice

For three days, Amrit has been sneezing and coughing. What organ system is being affected?

• nervous system

• circulatory system

• excretory system

• respiratory system

​Respiratory System

​Functions of the respiratory system:

​

• Allows you to talk and to smell.

• Warms air to match your body temperature and moisturizes it to the humidity level your body needs.

• Delivers oxygen to the cells in your body.

• Removes waste gases, including carbon dioxide, from the body when you exhale.

Multiple Choice

Ekam played soccer for three hours on Saturday. On Sunday, his legs and back ached. Which organ system is involved?

• integumentary system

• muscular system

• immune system

• circulatory system

​Muscular System

​Functions of the muscular system:

​1. Movement

• Skeletal muscles pull on the bones causing movements at the joints.

• Skeletal muscles pull on the soft tissues of the face causing facial expressions.

• Movement caused by the respiratory muscles enables breathing.

2. Support

• Muscles of the body wall support the internal organs.

• As these muscles lose their tone, the internal organs of the abdominal-pelvic cavity may bulge outward as seen in some individuals as they age.

3. Protection

• Skeletal muscles, particularly of e body wall, cushion the body's internal organs (abdominal cavity) from force applied to the exterior of the body. 

4. Heat generation

• Heat is a waste product of muscle metabolism, which helps maintain an internal body temperature of 98.6 F.

• Shivering is a mechanism of the muscular system that generates heat to warm an overly cooled body

Multiple Choice

In 2000, Bob Harmon discovered the best-preserved Tyrannosaurus rex skeleton ever found. The fossilized dinosaur was sticking out of the wall of a canyon in Montana. Many scientists were eager to study the fossils.Dr. Mary Schweitzer got one of the leg bones to analyze. Dr. Schweitzer’s assistant dissolved the bones in acid and discovered that some soft tissue had survived even after 68 million years. The discovery was a shock to the scientific community. No one had ever found such old tissues.Dr. Schweitzer found structures identical to modern red blood cells and blood vessels inside the bone. Which organ system do blood cells and blood vessels belong to?

• circulatory system

• nervous system

• respiratory system

• muscular system

Multiple Choice

Mr. Nguyen has been having difficulty remembering things. This week he misplaced his phone in the fridge, lost his keys, and forgot two important appointments. Which organ system is involved?

• circulatory system

• digestive system

• endocrine system

• nervous system

​Nervous System

The nervous system is comprised of the brain, spinal cord, and nerves. The brain controls our emotions, judgement, and memory. ​

Poll

How do you feel about your understanding of this lesson?

Open Ended

What questions do you have?