endocrine system
what are the 3 modes of chemical communication
endocrine, paracrine, autocrine
Epithelial tissue has no blood vessels of its own. What's the word for that? How does it receive nutrients and oxygen?
Avascular. It gets nutrients and oxygen from the underlying connective tissue.
Under the microscope, which cell looks large and empty, with its nucleus squashed to one edge?
The adipocyte (fat cell) because the lipid dissolves out during slide preparation
Emus, the "Emu War"
which hypothalamic hormone is NOT peptide/protein based
dopamine
What are the two things used to classify lining epithelia?
The number of cell layers and the cell shape at the apical surface.
name 3 of the 6 functions of connective tissue.
Support, Binding, Protection, Movement, Storage, Insulation and Transport
How many hearts does an octopus have?
three
what are 2 differences between the endocrine system and the nervous system
endocrine:
- slower acting than nervous system
- indirect
nervous:
- fast acting
- direct
The surface cells of keratinised stratified squamous epithelium are missing what that of non-keratinised surface cells still have?
Nuclei. The surface keratinised cells are dead.
compare the amount of cells and cellular matrix in connective tissue to epithelial tissue.
connective tissue is characterised by relatively few cells embedded in an abundant cellular matrix whereas, epithelial tissue is characterised as having an abundance of cells in little to no cellular matrix
What are the first names of the five brothers that made up the Jackson 5?
Jermaine, Marlon, Jackie, Tito and Michael
what are the differences between how the Anterior pituitary gland and the posterior pituitary gland is connected to the hypothalamus
the anterior PG is connected through a blood supply whereas the posterior PG is connected through nerves
What are the specialised surface cells of transitional epithelium called?
umbrella/dome cells
Which is the most abundant fibre type, known for its tensile strength?
collagen
Which country was the first Olympics held in?
Greece
what is the role of aldesterone hormone in the kidney
Aldosterone increases our reabsorption of salt in the kidneys, as wherever sodium goes water follows. Reabsorbing more sodium into our bloodstream means water follows and increases our blood volume, which means it also increases our blood pressure.
Why is pseudostratified epithelium called “pseudo”?
It appears layered but all cells touch the basal lamina, and is actually only a single layer
what kind of connective tissue is this?
dense regular connective tissue. Many parallel collagen fibres, relatively few cells, densely packed and orientated into parallel cylinders.
what is the deepest point of Earth?
the Mariana Trench in the Pacific Ocean at 10,935 to 10,984 meters deep