Connective Tissue

REVIEW OF EPITHLIIAL TISSUE

BELL Work 9/14

1) Take out your laptop
2) Take out your Packet

3) Note Cards will be due on Monday. ( posted on (Class Board)

4) Last call for Flipgrids

5) Log onto PPT.

​Learning Objectives

By the end of this section, you will be able to:

1) Identify the four main tissue types Discuss the functions of

each tissue type

2)Relate the structure of each tissue type to their function

3)Discuss the embryonic origin of tissue
4) Identify the three major germ layers

5) Identify the main types of tissue membrane

4 Types

of

Tissues

Connective

Tissue

Nervous
Tissue

Epithelial

Tissue

Muscle
Tissue

• Connective tissues provide support

and bind other tissues together.

• They can provide insulation and

protection for other tissues.

• Some are able to transport

substances.

• Most abundant tissue in your body.

• All connective tissues are formed

from one type of stem cell
(mesenchyme-embryonic origin).

• Connective tissues vary in their

degree of vascularity (presence of
blood vessels).

• All connective tissues are mostly

composed of extracellular matrix.

Categories of Connective Tissue

Extracellular

matrix

Ground

substance:

Watery or gel-like

substance secreted by

cells

Fibers or
Threads:

Collagen, elastic or

reticular

Ground substance

Basement Membrane

The MATRIX

Assignment: Color the
Matrix

Multiple Choice

Which of the following is NOT a type of connective tissue?

• Bone

• Cartilage

• Skin

• Blood

Multiple Choice

Which is NOT one of the 3 components that make up connective tissue?

• Extracellular matrix 

• Fibers

• Cells

• Basement membrane 

Multiple Choice

Connective tissues are composed of scattered cells within the _____.

• 
  intracellular space

• matrix

• epithelium

• the open lumen

Loose

Connective

Tissue

• Areolar
• Adipose
• Reticular

Dense

Connective

Tissue

• Regular
• Irregular
• Elastic

Areolar

Adipose

Reticular

• Mostly open space
• Holds water and salts

for surrounding tissues

• Found under

epithelium and around
organs

A. Loose Connective Tissue or

Areolar Tissue

Adipose

Reticular

•
Comprised of fat cells
(adipocytes)

•
Have large vacuoles that
contain fat/oil

•
Insulates and warms the
body

•
Provides nutrients to
other cells

Areolar

• Contains reticular

fibers, which create a
stiff framework that
support other cells

Regular

Irregular

Elastic

• Collagen fibers are

arranged in one
direction

• Provides “tensile

strength” like a rope

• Found in tendons &

ligaments

Irregular

Elastic

• Collagen fibers are

arranged in many
directions

• Provides strength in

multiple directions

• Found in capsules

around organs

Regular

Elastic

• Provides flexible

cushioning

• Found between

vertebrae and in
arteries

Regular

Irregular

Multiple Choice

Which connective tissue contains a gel-like matrix and is found in the nose, ear, and at the end of bones.

• Bone

• Cartilage

• Blood

• Adipose

Multiple Choice

• Hyaline cartilage

• Dense irregular tissue

• Areolar tissue

• Fibrocartilage

Multiple Choice

Which type of connective tissue makes up the dermis of the skin?

• Stratified squamous

• Loose connective

• Adipose

• Bone

Multiple Choice

Which tissue is loosely woven and absorbs fluids?

• Reticular

• Areolar

• Adipose

• Cartilage

Multiple Choice

What tissue is this

• Transitional epithelium

• Cartilage

• Dense Fibrous

• Areolar

Multiple Choice

Connective tissue is

• The tissue that protects, supports, and binds together other body tissue

• Tissue that is the lining, covering, and glandular tissue of the body

• Tissue that contracts and shortens to produce movement

Multiple Choice

Most connective tissue is well vascularized. What does that mean?

• Poor blood supply

• Good blood supply

Multiple Choice

This type of connective tissue forms strong rope like structures such as tendons and ligaments.

• Loose connective

• Dense connective

• Cartilage 

• Bone

•Connective tissue is used to support
and bind other tissues. It is made of
cells surrounded by an extracellular
matrix. The matrix is made of fibers
that are loosely or densely
arranged.

Hyaline

Fibro

-

cartilage

Elastic

•
Glassy looking

•
Firm ground substance
with lacuna (spaces for
cells)

•
Few collagen fibers

•
Found in larynx, bridge of
nose, and ribs

Hyaline Cartilage

Location: covers ends of joints, nose and respiratory
passages, serves as padding

Fibro

-

cartilage

Elastic

• Contains lots of

collagen, mostly
running parallel.

• Found in intervertebral

spaces

Areolar

Elastic

• Highly flexible
• More elastic fibers
• Found in outer ear and

tip of nose

Hyaline

Fibro

-

cartilage

•
Osteocytes secrete ground
substances, fibers, collagen,
and fluids.

•
The ground substance
eventually becomes calcified
and hard.

•
2 types: spongy & compact

Although blood (vascular tissue)
doesn’t seem like a “connective”

tissue, it does have all the

requirements:

• Ground substance = plasma (fluid)
• “Fibers” = platelets which clot the

blood

Mast Cells

Blood Cells

• Detect foreign

substances

• Contain granules that

secrete inflammatory
chemicals

Macrophages

• Blob-like cells that

engulf invading
substances or
organisms

Mast Cells

Macrophages

Blood cells

Blood Cells

Macrophages

Mast Cells

•
Red Blood Cells-
erythrocytes (carry oxygen)

•
White Blood Cells-
leukocytes (provide
immune response)

F. Blood Tissue

More on this in the
circulatory system unit.

Warning: Students
often forget that
blood is a type of
connective tissue!

•Connective tissues can have
different types of ground substances
in the extracellular matrix. Cartilage
has a flexible ground substance,
bone has a calcified ground
substance, and blood has a fluid
ground substance.