Anatomy and Physiology B/C

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dchen22
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Re: Anatomy and Physiology B/C

Post by dchen22 »

1. Why do humans have a blind spot?
2. Which ancestral mammal bone did the malleus ossicle evolve from?
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Re: Anatomy and Physiology B/C

Post by MorningCoffee »

dchen22 wrote: September 22nd, 2021, 4:39 am 1. Why do humans have a blind spot?
2. Which ancestral mammal bone did the malleus ossicle evolve from?
1. Since the area where the optic nerves connect with the retina has no light-sensitive cells, humans therefore cannot see anything there.
2. neural crest-derived mesenchyme of the first and second pharyngeal arches (i think)
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Re: Anatomy and Physiology B/C

Post by dchen22 »

MorningCoffee wrote: September 22nd, 2021, 1:52 pm
dchen22 wrote: September 22nd, 2021, 4:39 am 1. Why do humans have a blind spot?
2. Which ancestral mammal bone did the malleus ossicle evolve from?
1. Since the area where the optic nerves connect with the retina has no light-sensitive cells, humans therefore cannot see anything there.
2. neural crest-derived mesenchyme of the first and second pharyngeal arches (i think)
1. Yes, specifically because the nerve fibers pass in front of the retina, so there can’t be cones or rods where the nerve fibers exit the eye.
2. Sure, but I was looking for the evolutionary history (in synapsids). The ossicle evolved from the articulate bone.
Your turn!
Last edited by dchen22 on September 22nd, 2021, 5:34 pm, edited 1 time in total.
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Re: Anatomy and Physiology B/C

Post by MorningCoffee »

woo endocrine time!
1. What is a goiter?
2. State the steps for a nonsteroid hormone entering a cell.
3. Define the 3 types of hormones.
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Re: Anatomy and Physiology B/C

Post by melaniaaachen »

MorningCoffee wrote: September 23rd, 2021, 2:39 pm woo endocrine time!
1. What is a goiter?
2. State the steps for a nonsteroid hormone entering a cell.
3. Define the 3 types of hormones.
1. What is a goiter?
A goitre (sometimes spelled "goiter") is a swelling of the thyroid gland that causes a lump in the front of the neck. The lump will move up and down when you swallow.
2. State the steps for a nonsteroid hormone entering a cell.
=>Steroid hormones pass through the cell membrane of the target cell.
=>The steroid hormone binds with a specific receptor in the cytoplasm.
=>The receptor bound steroid hormone travels into the nucleus and binds to another specific receptor on the chromatin.
=>The steroid hormone-receptor complex calls for the production of messenger RNA (mRNA) molecules, which code for the production of proteins.
3. Define the 3 types of hormones.

The three types of hormones are steroid hormones, peptide hormones and amino acid derivatives
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Re: Anatomy and Physiology B/C

Post by MorningCoffee »

melaniaaachen wrote: September 27th, 2021, 12:30 pm
MorningCoffee wrote: September 23rd, 2021, 2:39 pm woo endocrine time!
1. What is a goiter?
2. State the steps for a nonsteroid hormone entering a cell.
3. Define the 3 types of hormones.
1. What is a goiter?
A goitre (sometimes spelled "goiter") is a swelling of the thyroid gland that causes a lump in the front of the neck. The lump will move up and down when you swallow.
2. State the steps for a nonsteroid hormone entering a cell.
=>Steroid hormones pass through the cell membrane of the target cell.
=>The steroid hormone binds with a specific receptor in the cytoplasm.
=>The receptor bound steroid hormone travels into the nucleus and binds to another specific receptor on the chromatin.
=>The steroid hormone-receptor complex calls for the production of messenger RNA (mRNA) molecules, which code for the production of proteins.
3. Define the 3 types of hormones.
The three types of hormones are steroid hormones, peptide hormones and amino acid derivatives
all correct, your turn! also, next time don't forget to use the spoiler function when answering! not me forgetting about this and wondering why it died
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Re: Anatomy and Physiology B/C

Post by SweetThings »

Trying to pick back up this thread, but I don't know the endocrine system yet so back to the nervous system.

1. What is the main neurotransmitter that regulates whether the basal ganglia follow the indirect or direct pathways.
2. When and where are alpha waves typically seen.
3. What is the cause of Parkinson's Disease.
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AJ27 (April 11th, 2022, 5:00 pm)
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Re: Anatomy and Physiology B/C

Post by AJ27 »

My Answer: 1. Dopamine
2. Alpha waves are seen in relaxed or drowsy people and can be found in the occipital lobe of the brain.
3. Parkinson's Disease is caused by the deficiency of neurotransmitter dopamine.
Is that right?
Last edited by AJ27 on December 30th, 2021, 5:28 pm, edited 2 times in total.
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2023 States Div B: Anatomy & Physiology 2nd, Crave the Wave 2nd, Dynamic Planet 1st, Codebusters 6th
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Re: Anatomy and Physiology B/C

Post by SweetThings »

AJ27 wrote: December 30th, 2021, 3:01 pm My Answer: 1. Dopamine
2. Alpha waves are seen in relaxed or drowsy people and can be found in the occipital lobe of the brain.
3. Parkinson's Disease is caused by the deficiency of neurotransmitter dopamine.
Is that right?
Correct, but for 2 I was also looking for something on alpha waves being background rhythm.
Your turn!
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Re: Anatomy and Physiology B/C

Post by AJ27 »

More questions...
1. The surgical treatments of diabetic retinopathy are laser coagulation to seal damaged blood vessels, other laser surgeries to remove damaged tissue and which surgery (Hint: it has to do with the removal of something in the eye)?
2. What causes otitis media in the ear?
3. What is the most common type of color blindness?
2022 States Div B: Anatomy & Physiology 2nd, Codebusters 8th
2022 Nationals Div B: Anatomy & Physiology 9th :), Codebusters 37 :|
2023 States Div B: Anatomy & Physiology 2nd, Crave the Wave 2nd, Dynamic Planet 1st, Codebusters 6th
2023 Nationals Div B: TBD...
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