Anatomy & Physiology B/C

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mangothecat
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Re: Anatomy & Physiology B/C

Postby mangothecat » August 20th, 2016, 9:43 pm

Which structure of the eye produces rheum, or gound?
medial caruncle (i think...)
“Cats can work out mathematically the exact place to sit that will cause most inconvenience.” ~Pam Brown
2016: Churchill, Mira Loma, Mesa/Wilson, Wicklund, Regs, States
Anat&Physio: 2/3/1/1/1/
Disease Detectives: 1/1/2/1/1/
Microbe Mission: 1/4/2/2/2/

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bhavjain
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Re: Anatomy & Physiology B/C

Postby bhavjain » August 20th, 2016, 10:00 pm

Which structure of the eye produces rheum, or gound?
medial caruncle (i think...)
I've mostly heard it being called the lacrimal caruncle, but I've seen your answer as a synonym as well. Correct!

Your turn.
2017 Science Olympiad - (Invites TBD/Reg/State/Nats) - Division C

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Re: Anatomy & Physiology B/C

Postby mangothecat » August 22nd, 2016, 7:02 pm

Choose the correct answers:
In the dark, cGMP gated cation channels of a photoreceptor are (1)[open/closed], causing the photoreceptor to (2)[depolarize/hyperpolarize]. This causes (3) [Ca++/Na+] channels to (4) [open/close] at the synaptic terminal of the photoreceptor. Neurotransmitter (5) [is/is not] released into the synaptic cleft, causing (6) [IPSPs/EPSPs] in the bipolar cell, and thus (7) [depolarizing/hyperpolarizing] the bipolar cell. At the synaptic terminal of the bipolar cell, voltage gated (8)[Ca++/Na+] channels (9)[open/close], and neurotransmitter (10)[is/is not] released into the synaptic cleft. As a result, EPSPs (11)[are/are not] generated in the ganglion cell, and an action potential (12)[does/does not] propagate along the optic nerve.
Aaaah hope I'm not too confusing
“Cats can work out mathematically the exact place to sit that will cause most inconvenience.” ~Pam Brown
2016: Churchill, Mira Loma, Mesa/Wilson, Wicklund, Regs, States
Anat&Physio: 2/3/1/1/1/
Disease Detectives: 1/1/2/1/1/
Microbe Mission: 1/4/2/2/2/

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bhavjain
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Re: Anatomy & Physiology B/C

Postby bhavjain » August 22nd, 2016, 8:54 pm

Choose the correct answers:
In the dark, cGMP gated cation channels of a photoreceptor are (1)[open/closed], causing the photoreceptor to (2)[depolarize/hyperpolarize]. This causes (3) [Ca++/Na+] channels to (4) [open/close] at the synaptic terminal of the photoreceptor. Neurotransmitter (5) [is/is not] released into the synaptic cleft, causing (6) [IPSPs/EPSPs] in the bipolar cell, and thus (7) [depolarizing/hyperpolarizing] the bipolar cell. At the synaptic terminal of the bipolar cell, voltage gated (8)[Ca++/Na+] channels (9)[open/close], and neurotransmitter (10)[is/is not] released into the synaptic cleft. As a result, EPSPs (11)[are/are not] generated in the ganglion cell, and an action potential (12)[does/does not] propagate along the optic nerve.
Aaaah hope I'm not too confusing
Fun question!
open, depolarize, Ca++, open, is, IPSPs, hyperpolarizing, Ca++, close, is not, are not, does not
Hopefully I got those right :D
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mangothecat
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Re: Anatomy & Physiology B/C

Postby mangothecat » August 24th, 2016, 9:04 pm

Choose the correct answers:
In the dark, cGMP gated cation channels of a photoreceptor are (1)[open/closed], causing the photoreceptor to (2)[depolarize/hyperpolarize]. This causes (3) [Ca++/Na+] channels to (4) [open/close] at the synaptic terminal of the photoreceptor. Neurotransmitter (5) [is/is not] released into the synaptic cleft, causing (6) [IPSPs/EPSPs] in the bipolar cell, and thus (7) [depolarizing/hyperpolarizing] the bipolar cell. At the synaptic terminal of the bipolar cell, voltage gated (8)[Ca++/Na+] channels (9)[open/close], and neurotransmitter (10)[is/is not] released into the synaptic cleft. As a result, EPSPs (11)[are/are not] generated in the ganglion cell, and an action potential (12)[does/does not] propagate along the optic nerve.
Aaaah hope I'm not too confusing
Fun question!
open, depolarize, Ca++, open, is, IPSPs, hyperpolarizing, Ca++, close, is not, are not, does not
Hopefully I got those right :D
Yeeup, all of them are correct! Your turn!
“Cats can work out mathematically the exact place to sit that will cause most inconvenience.” ~Pam Brown
2016: Churchill, Mira Loma, Mesa/Wilson, Wicklund, Regs, States
Anat&Physio: 2/3/1/1/1/
Disease Detectives: 1/1/2/1/1/
Microbe Mission: 1/4/2/2/2/

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bhavjain
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Re: Anatomy & Physiology B/C

Postby bhavjain » August 25th, 2016, 3:58 pm

Which structure in the midbrain contains high levels of neuromelanin in dopaminergic neurons? This structure was also discovered in 1784.
2017 Science Olympiad - (Invites TBD/Reg/State/Nats) - Division C

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Disease Detectives: (-/-/-/-)
Ecology: (-/-/-/-)
Microbe Mission: (-/-/-/-)
Remote Sensing: (-/-/-/-)
Rocks & Minerals: (-/-/-/-)
Towers: (-/-/-/-)

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mangothecat
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Re: Anatomy & Physiology B/C

Postby mangothecat » August 25th, 2016, 5:44 pm

Which structure in the midbrain contains high levels of neuromelanin in dopaminergic neurons? This structure was also discovered in 1784.
substantia nigra
“Cats can work out mathematically the exact place to sit that will cause most inconvenience.” ~Pam Brown
2016: Churchill, Mira Loma, Mesa/Wilson, Wicklund, Regs, States
Anat&Physio: 2/3/1/1/1/
Disease Detectives: 1/1/2/1/1/
Microbe Mission: 1/4/2/2/2/

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bhavjain
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Re: Anatomy & Physiology B/C

Postby bhavjain » August 25th, 2016, 8:23 pm

Which structure in the midbrain contains high levels of neuromelanin in dopaminergic neurons? This structure was also discovered in 1784.
substantia nigra
Correct! Your turn.
2017 Science Olympiad - (Invites TBD/Reg/State/Nats) - Division C

Anatomy: (-/-/-/-)
Astronomy: (-/-/-/-)
Disease Detectives: (-/-/-/-)
Ecology: (-/-/-/-)
Microbe Mission: (-/-/-/-)
Remote Sensing: (-/-/-/-)
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Re: Anatomy & Physiology B/C

Postby mangothecat » August 28th, 2016, 9:38 pm

What hormone is secreted by cells of the zona glomerulosa? What does this hormone do?
“Cats can work out mathematically the exact place to sit that will cause most inconvenience.” ~Pam Brown
2016: Churchill, Mira Loma, Mesa/Wilson, Wicklund, Regs, States
Anat&Physio: 2/3/1/1/1/
Disease Detectives: 1/1/2/1/1/
Microbe Mission: 1/4/2/2/2/

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bhavjain
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Re: Anatomy & Physiology B/C

Postby bhavjain » August 29th, 2016, 5:52 pm

What hormone is secreted by cells of the zona glomerulosa? What does this hormone do?
Aldosterone; increases blood pressure by stimulating reabsorption of water and sodium ions, increases excretion of potassium and hydrogen ions, works in the renin-angiotensin-aldosterone mechanism.
2017 Science Olympiad - (Invites TBD/Reg/State/Nats) - Division C

Anatomy: (-/-/-/-)
Astronomy: (-/-/-/-)
Disease Detectives: (-/-/-/-)
Ecology: (-/-/-/-)
Microbe Mission: (-/-/-/-)
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