F214 Endocrine system HARDEST QUIZ EVER

F214 Endocrine system OCR BIOLOGY HARDEST QUIZ EVER

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  • Created by: Ruby
  • Created on: 18-11-12 23:54
Define horomone
Molecules released by the endocrine system directly into the blood. Acts as a chemical receptor carrying signals to target cells
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Define endocrine gland
ductless Gland inside the organism which secretes hormones directly into the blood.
2 of 12
define exocrine gland
gland which secretes moelciles into a duct that carries the molecule where they want to be used up
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An endocrine gland is ductless....so what does it have instead?
a group of cells that produce/release hormones straight into the blood cappilaries
4 of 12
How is having different hormones with different active sites beneficial to the body?
hormones could move around the body freely without affecting the cells that do not pocess a correct active site for it to bind to
5 of 12
Give two examples of the nature of hormones'?
they are two types. protein and and peptide hormones like insulin and glucagon and steroid hormones like oestrogen/testosterone
6 of 12
Define first messenger in Biology
hormones that transmit signals around the body
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Define what a second messenger is
molecules that transmit signals inside the cell such as cAMP
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What is the function of the exocrine system
secretion of pancreatic juice, manufacture/contains several digestive enxymes e.g. lipase/amylase/trypsin
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what is the main fucntions of the endocrine gland
secretion of hormones in the islet of langerhad of the pancreas, hormones directly secreted into the blood
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What happens when hyperglycaemnia occurs in the mammalian blood
alpha and beta cells in the islets of langerhan detect rise in blood glucose, less glucagon/more insulin secreted by pancreas, liver cell respond to less glucagon, liver cells stores sugars as glycogen
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What happens when hypoglycaemnia occurs in the mammalian blood
alpha and beta cells in the islets of langerhand detect fall in blood glucose, receptors in the endocrine system (pancreas) release more glucagon/less insulin, gluconeogenesis occurs
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Other cards in this set

Card 2

Front

Define endocrine gland

Back

ductless Gland inside the organism which secretes hormones directly into the blood.

Card 3

Front

define exocrine gland

Back

Preview of the front of card 3

Card 4

Front

An endocrine gland is ductless....so what does it have instead?

Back

Preview of the front of card 4

Card 5

Front

How is having different hormones with different active sites beneficial to the body?

Back

Preview of the front of card 5
View more cards

Comments

Megan

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Q4 and Q8 are wrong:

alpha and beta cells do not detect a rise or fall together, beta cells detect a rise and alpha cells detect a fall.

hypoglycemia is when your blood sugar is too low and hyperglycemia is when your blood sugar is too high.

Ruby

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Let me clarify the following:

Question 8 is correct- the definition is checked from the OCR textbook for clarity. 

Hannah

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I think you might have picked a sentence with a mistake in! Just to let you know I have that textbook and its littered with mistakes!

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