Organization of Living Things:

Question 1

Tissues:

Answer 1

A collection of specific types of cells (eg. muscle, nerve)

Question 2

Types of Tissues:

Answer 2

-Connective
-Epithelial
-Nerve
-Muscle

Question 3

Connective Tissue:

Answer 3

Supports, connects, and protects the body’s organs (bones, blood, cartilage, and ligaments)

-can be made of living cells and non living material
-connect bones to muscles
-connect blood to body systems (carries nutrients and waste)

Question 4

Epithelial Tissue:

Answer 4

Tightly packed cells that cover surfaces in the body (skin, organs, etc…)

-one layer thick = easy for substances to pass through (in lungs —- oxygen and carbon dioxide)
-many layers protect organs under the layers

Question 5

Nerve Tissue:

Answer 5

Very complex tissue for sensory and sending signals throughout the body

-makes up the brain, spinal cord, and nerves
-special nerve cells are found in the eyes, ears, skin, nose, and mouth

Question 6

What are the three types of nerve tissue?

Answer 6

1. Sensory = carries info from body to brain
2. Motor Neurons = carries info from brain to muscles
3. Interneurons = carries info between sensory and motor neurons to the brain

Question 7

Muscle Tissue:

Answer 7

Made of cells that contract and release:

-some are voluntary (V) — need to think to move
-some are involuntary (IV) — move without thinking

Question 8

Muscle Tissues are found in…?

Answer 8

1. Skeletal Muscle Tissue (V) = surrounding bones
2. Smooth Muscle Tissue (IV) = organs such as stomach, esophagus, arteries, and veins
3. Cardiac Muscle Tissue (IV) = heart