(P) Lab 1: Cell Orientation Flashcards
What are the 5 organs examined during the lab orientation?
- Liver
- Spinal Cord
- Skeletal Muscle
- Compact Bone
- Skin Epidermis
What is the parenchyma of the liver?
Hepatocytes or liver cells
What is the parenchyma of the spinal cord?
Neurons or nerve cells
What is the parenchyma of the skeletal muscle?
Myocytes or skeletal muscle cells
What is the parenchyma of compact bone?
Osteocytes or bone cells
What is the parenchyma of skin (epidermis)?
Keratinocytes
How many nuclei are in hepatocytes?
Mononucleated or Binucleated
How many nuclei are in neurons?
Mononucleated
How many nuclei are in myocytes?
Multinucleated
How many nuclei are in osteocytes?
Mononucleated
How many nuclei are in keratinocytes?
Mononucleated
Which organ is the only multinucelated one?
Skeletal Muscle
Which parenchya is the only multinucelated one?
Myocytes or skeletal muscle cells
Which organ can be mononucleated or binucleated?
Liver
Which parenchyma can be mononucleated or binucleated?
Hepatocytes or Liver cells
What is the location of the nucleus in hepatocytes?
Central
What is the location of the nucleus in myocytes?
Peripheral
What is the location of the nucleus in neurons?
Central
What is the location of the nucleus in osteocytes?
Central
What is the location of the nucleus in keratinocytes?
Central
What organ has their nuclei peripherally located?
Skeletal Muscle
What parenchyma has their nuclei peripherally located?
Myocytes or Skeletal Muscle Cells
What is the cell shape of hepatocytes?
Polygonal OR polyhedral
What is the cell shape of myocytes?
Elongated with blunt ends OR cylindrical with blunt ends
What is the cell shape of neurons?
Stellate
What is the cell shape of osteocytes?
Almond with projections
What is the cell shape of keratinocytes?
Flat OR squamous
What is the arrangement of hepatocytes?
In rows, cords, or chains
What is the arrangement of myocytes?
In bundles or fascicles
What is the arrangement of neurons?
Haphazard or random
What is the arrangement of osteocytes?
Concetric
What is the arrangement of keratinocytes?
In layers or sheets
What does the liver, bone, spinal cord, and skin have in common in terms of nuclei location?
All are centrally located
What organ is uniquely multinucleated and has their nuclei peripherally located?
Skeletal Muscle
What does the liver, bone, spinal cord, and skin have in common in terms of the number of nuclei?
All can be mononucleated
*with the exemption of the liver since it can be BINUCLEATED
What radiates from the liver’s central veins?
Hepatocytes or liver cells
The liver is divided into ______ and at the center of these lies the central vein
Lobules
What is found at the center of each lobule of the liver?
Central vein
These are spaces between the liver cells that contain mixed blood
Hepatic sinusoids
This is the connective tissue that surrounds a bundle of muscle fibers
Perimysium
Each muscle cell is enveloped by a loose collagenous tissue known as _______
Endomysium
What capillary supplies the muscle?
Continuous capillary
The entire muscle cell is surrounded by a dense connective tissue known as ________
Epimysium
The spinal cord is divided into _______ and _______
White matter and Gray matter
In which matter are the neurons located?
Gray matter
The distinct nucleolus at the center of the neuron gives it what kind of appearance?
Fish eye appearance
What kind of capillaries are found scattered within the gray matter?
Continuous capillaries
What is found at the center of the osteon?
Haversian canal
Refers to the concentrically-arranged bony lamellae in an osteocyte?
Osteon
This part in an osteon is where the osteocytes are found; the Haversian canal is surrounded by concentric lamellae where these are found
Lacuna
*Osteocytes are found in the lacuna and lacunae are found in an osteon (osteocytes < lacunae < osteon)
Osteocytes possess fine cytoplasmic processes that insert themselves in the bone’s _______
Canaliculi (small passageway)