Chapter 4 - Part 2 (Connective Tissue) Flashcards
The dense layer of the basement membrane is created by …?
connective tissue
What is the matrix?
Extracellular fibers and ground substances together. Matrix surrounds the cells
Most of the volume of connective tissue is…..
the extracellular matrix
Are connective tissues ever exposed to the outside environment?
NO
Are connective tissues vascular? what does this mean?
YES - they have many blood vessels
Do connective tissues have sensory receptors?
YES
Name 6 features of connective tissue
- Establish a structural framework for the body
- Transport fluids and dissolved materials
- Protect delicate organs
- Support and interconnect other types of tissue
- Store energy reserves
- Defend the body from invading microorganisms
What are the 3 categories of connective tissue?
- Connective tissue proper
- Fluid connective tissue
- Supporting connective tissue
Connective tissue proper is further broken down into:
loose connective tissues and dense connective tissues
What are the 2 types of fluid connective tissues?
blood and lymph
What are the 2 types of supporting connective tissue?
cartilage and bone
Because it contains mineral deposits, the matrix of bone is said to be _____
calcified
What are the stem cells in connective tissue proper?
mesenchymal cells
What cells in connective tissue proper develop into plasma cells?
lymphocytes
What are the 3 fibers in connective tissue?
- Elastic fibers
- Reticular fibers
- Collagen fibers
Of the 3, which of the fibers are most common in connective tissue?
collagen fibers
Of the 3, which of the fibers are most common in connective tissue?
collagen fibers
What property of ground substance makes it hard for bacteria to move in?
very dense due to the presence of proteoglycans and glycoproteins
What is another name for embryonic connective tissue?
mesenchyme
Which connective tissue is the first to appear in an embryo and produces ALL OTHER connective tissues?
Mesenchyme
Besides mesenchyme, what is the other embryonic connective tissue?
mucous connective tissue
Do embryonic connective tissues remain in the body through adulthood?
NO but mesenchymal stem cells assist in tissue repair after an injury
Name 4 kinds of loose connective tissue
- mucous connective tissue in embryos
- Areolar tissue
- Adipose tissue
- Reticular tissue
What is the LEAST SPECIALIZED connective tissue?
areolar tissue
Which tissue has an extensive blood supply and is a common injection site for drugs?
areolar tissue
Most of the adipose tissue in the body is called….
white fat
Why is fat brown in infants and young children?
Highly vascularized and contains numerous mitochondria
What is a liposuction?
Unwanted adipose tissue is surgically removed
What does it mean to say “the parenchyma of these organs”
refers to the “functional cells” of these organs
Most of the volume of dense connective tissues is occupied by _____
fibers
The body has 2 types of dense connective tissues:
dense regular connective tissues and dense irregular connective tissues
In dense regular connective tissue, collage fibers….
are parallel to each other and packed tightly
What are tendons?
cords of DENSE REGULAR connective tissue that attach skeletal muscles to bone
What is an aponeurosis?
tendinous sheet that attaches a flat muscle to another muscle or several bones
What is an aponeurosis?
tendinous sheet that attaches a flat muscle to another muscle or several bones
The fibers in dense IRREGULAR connective tissue have…
no consistent pattern
Which gives skin its stregth - dense regular or irregular?
irregular
Dense irregular/regular - which forms a thick fibrous layer called a capsule?
irregular
What does a capsule do?
surrounds internal organs and encloses the cavities of jointd
Is elastic tissue dense irregular or regular?
regular
In blood, the watery matrix is called ______
plasma
plasma contains…
blood cells and fragments of cells
These “blood cells and fragments of cells” are collectively called….
formed elements
What are the 3 types of formed elements?
white blood cells, red blood cells, platelets
What are the 3 major subdivisions of extracellular fluid?
plasma, lymph, and interstitial fluid
Arteries carry blood ___from the heart and into ____
away from the heart and into the tissues of the body
What are the smallest blood vessels?
capillaries
List the 3 categories of connective tissues
connective tissue proper, fluid connective tissues, supporting connective tissues
Identify the populations of cells found in connective tissue proper
adipocytes
fibroblasts
lymphocytes
macrophages
mast cells
melanocytes
mesenchymal cells
microphages
Reduced collage resulting from a lack of vitamin C would have what effect on connective tissue?
connective tissue would be weak and prone to damage
Which 2 cells in connective tissue produce histamine?
mast cells and basophils
Which type of connective tissue primarily contains triglycerides?
adipose tissue
Which 2 types of connective tissue have a fluid matrix?
blood and lymph
The matrix of cartilage is a firm gel that contains polysaccharide derivatives called…
chondroitin sulfates
Cartilage cells are also called
chondrocytes
Chondrocytes occupy small chambers called…
lacunae
Is cartilage vascular or avascular?
avascular
Why is cartilage avascular?
Because of a chemical named antiangiogenesis factor
Cartilage is set apart from surrounding tissues by a fibrous…
perichondrium
The perichondrium has 2 layers:
outer, fibrous layer (for strength)
inner, cellular layer (for growth and maintenance)
What are the 3 major types of cartilage?
- Hyaline cartilage
- Elastic cartilage
- Fibrocartilage
What is the most common type of cartilage?
Hyaline cartilage
Is the volume of ground substance in bone large or small?
small
The matrix of bone consists of….
calcium phosphate
calcium carbonate
collagen fibers
Lacunae in the matrix of bone contain…..
osteocytes
Compare the demand for oxygen in bones and cartilage
demand for oxygen is high in bones but low in cartilage
Compare the repair capabilities in bone and cartilage
bone has extensive repair capabilities while cartilage has limited
Compare the fibers in bone and cartilage
bone - collagen fibers predominate
cartilage - collagen, elastic, and reticular fibers
Compare the vascularity in cartilage and bone
bone - extensive
cartilage - AVASCULAR
Identify the 2 types of supporting connective tissue
cartilage and bone
Why does bone heal faster than cartilage?
Unlike cartilage, bone has a direct blood supply which is necessary for proper and rapid healing to occurq
If a person has a herniated intervertebral disc, which type of cartilage has been damaged?
fibrocartilage
What are 4 epithelium membranes supported by connective tissue?
- Serous membranes
- Mucous membranes
- Cutaneous membranes
- Synovial membranes
Mucous membranes line passages that….
communicate with the exterior
The areolar tissue component of a mucous membrane is called the…
lamina propria
Serous membranes line the…
sealed, internal subdivisions of the ventral body cavity
What are the 3 types of serous membranes?
- Pleura
- Pericardium
- Peritoneum
Are serous membranes thin or thick?
thin
Each serous membrane can be divided into….
parietal portion
visceral portion
What is the fluid formed on the surface of a serous membrane called and what is the purpose?
transudate - just enough of it to prevent friction between the walls of cavities and the surfaces of internal organs
The cutaneous membrane is also called…
the skin
The skin consists of..
stratified squamous epithelium and a layer of areolar tissue reinforced by connective tissue
Is the cutaneous membrane thin or thick in relation to the serous and mucous membranes?
thick
Synovial membranes line…..
joint cavities
Which cavities in the body are lined by serous membranes?
PLEURAL
PERICARDIAL
PERITONEAL
Which type of membrane is a nasal cavity
mucous membrane
What are fasciae?
connective tissue layers that support and surround organs
The fasciae is divided into 3 layers:
- Superficial fascia
- deep fascia
- subserous fascia
The superficial fasciae is also called the…..
hypodermis
the DEEP FASCIA consists of…….
dense IRREGULAR connective tissue
Describe the organization of fibers in the deep fascia
resembles plywood. In each layer, all the fibers run in the same direction, but the orientation of the fibers changes layer to layer
The subserous fascia is a layer of ____ tissue that lies between the ____ and the _____
areolar tissue, lies between the serous membranes of body cavities and the deep fascia
A sheet of tissue has many layers of collagen fibers that run in different directions in successive layers. Which type of tissue is this?
deep fascia (dense connective tissue that attaches muscle to skin and bones)