4.5 - Building Organs from Tissues Flashcards
Examples of hollow organs
- Stomach
- Intestine
- Gallbladder
- Urinary bladder
- Uterus
Examples of solid organs
- Liver
- Spleen
- Pancreas
- Kidneys
- Adrenals
- Ovaries
What are the layers of hollow organs?
Inner Layer
- Mucosa = loose CT + epithelium
Middle layer
- Muscle + CT
Outer layer
- Serosa = epithelium + loose CT
What are the 3 ways hollow organs can flow?
Circular, unidirectional, and bidirectional
Blood flow from heart to arteries, capillaries, veins, and back to heart is what type of flow?
Circular
Food and drink enter mouth, esophagus, stomach, intestines, colon, and exit at anus is what type of flow
Unidirectional
Bile flows from liver to gall bladder for storage and is then delivered to the duodenum is what type of flow
Unidirectional
Air flows into nose, trachea, bronchi, alveoli, and back out via same route is what type of flow
Bidirectional
The uterus has what type of flow
- Fetus = unidirectional
- Sperm fertilizing egg and moving down = bidirectional
Solid organs are surrounded by
CT capsule
In solid organs, blood vessels and nerves enter and exit via a
hilum
___ carries out the functions of the solid organ
parenchyma
What surrounds the parenchyma and supplies nutrients
Blood vessels
What’s the largest solid organ?
Liver
T/F: the liver can regenerate
Yes, but partially
Major function of liver
store glucose as glycogen and convert it back to glucose when needed
Functions of the spleen
- Ability to have immune response in presence of antigen
- Takes iron out of dead RBC and recycles them
Is the tooth a hollow or solid organ?
Solid
Layers of the teeth
(out to in)
Enamel, dentin, pulp
What ligament surrounds the tooth and what’s its function?
Periodontal ligament
Senses/responds to pain
Functions of the tooth
A sense organ and is a chewing/biting device
Cells of the tooth
Odontoblasts
Ameloblasts
Endothelial cells
Nerve fibers
Fibroblasts
Tissues of the teeth
Soft tissues (CT of pulp)
Hard tissues (enamel, dentin, cementum)
