Help with A&P Questions please

Sonne13 · 2005-06-23T17:06:00Z

Hiya guys, I am swatting for my A&P exam next week and came across quite a few questions where I need your help please. Could somebody clarify which answers are correct? I am despairing as I have no idea how I should ever remember all of A&P [sm=fit.gif] 1) which of the following statements is true? a) skin absorbs chemicals through the dermis b) skin is a waterproof barrier c) skin absorbs water through the epidermis d) skin is non-waterproof 2) which systems regulate the temperature of the body? a) blood supply and sebaceous glands b) blood supply and sweat glands c) blood supply only d) ? 3) which muscle closes the mouth? Masseter????? 4) which muscle do you use when coughing? 5) which muscle do you use when opening a doorhandle? 6) which endocrine gland is related to the kidneys? 7) which system does acetylcholine work with? Parasympathetic??????? 8) what does blood tissue do? 9) which muscle raises trunk after sitting? Gluteus maximus??????? 10) what does the splenic artery supply apart from the spleen? 11) what speeds up transmission of nerve impulses? Myelin Sheath or Nodes of Ranvier?????? 12) where is the cervix? in the uterus or between uterus & vagina????? 13) what effect does the parasympathetic nervous system have on digestion? a) increase in excretion of pancreatic juice b) increase in secretion of pancreatic juice c) inhibition of secretion of digestive juice d) inhibition of micturition I am sure that I will come across lots and lots more questions over the next couple of days. Thank you so much for all your help so far. It is much appreciated and I think I would be totally lost without this forum. Good luck to everybody who is sitting exams - hope we all pass. Thanks, Son [sm=nature-smiley-008.gif]

Posts: 8

Sonne13

Topic starter

Jun 27, 2005 8:49 am

(@sonne13)

Active Member

Joined: 22 years ago

RE: Help with A&P Questions please

Hi Andrea, Hi Tranquility,

Thank you so much for all your help and advice. Have been revising like mad over the past days (my head is spinning and I think I will be mixing up everything now [:o] and the Louise Tucker book has become my "bible" which I carry everywhere.

There are still two questions though which I still haven't figured out and I was wondering if you could point me in the right direction:

1) What does lymphatic tissue do?
a) filter and destroy hamful bacteria
b) produce anti-bodies
c) produce lymphocytes
d) absorb fatty droplets

According to the Louise Tucker book lymph tissue contains many types of cells:
phagocytes: -engulf and destroy harmful waste and bacteria
cells producing antibodies (lymphocytes)
cells dividing to form new lymphocytes

which means that answers a,b and c sound correct to me - or am I having a real blonde moment here and this is one of the ITEC trick questions again???

2) what effect does the parasympathetic nervous system have on digestion?
a) increase in excretion of pancreatic juice
b) increase in secretion of pancreatic juice
c) inhibition of secretion of digestive juice
d) inhibition of micturition

I keep reading through the passages of the book on the nervous system but just don't get this part.

Can anybody help please?

Thank you all so much again. Got the exam tomorrow and feel as if my brain has gone totally blank now.

Hope the exam won't be too nasty.

Son

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Posts: 109

freddie

Jun 27, 2005 4:04 pm

(@freddie)

Estimable Member

Joined: 22 years ago

RE: Help with A&P Questions please

Hi Sonne!
Here are some answers which seem to make sense to me:

2. b) Blood & sweat
3. Pterygoid muscle?
The masseter raises the mandible (lower jaw) and clenches teeth.
5. Pronator teres/supinator. Depends which way the handle goes!
6. ADH from the PITUITARY controls water re-absorption in kidneys.
7. generally, parasympathetic fibres use Ac.choline as transmitter.
9. Agree -gluteus maximus
11. Myelin sheath - acts as a kind of electrical insulator.

I have to say that it's 30 years since I did my physiol. degree & I don't always see what ITEC are aiming for, but hope these help.
Freddie 🙂

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Posts: 64

Eagle

Jul 01, 2005 6:37 am

(@eagle)

Trusted Member

Joined: 22 years ago

RE: Help with A&P Questions please

Hi Son

Thanks for asking these questions - I find it really helpful because then I get to see what I am also not confident about either and can work out what I think the best answer is. So, here are my answers to your questions:

1 b)
2 b)
3 to close the jaw: masseter; to close the lips: orbicularis oris
4 transvers adbominus
5 supinator
6 adrenal
7 parasympathetic
8 transports food and oxygen to body cells, removes waste from them, fights infection and clots
9 Gluteus maximus
10 Couldn't find anything else it supplies (haven't done an web search though, this may reveal something else)
11 Here's the tricky one because Louise Tucker doesn't differentiate much - the wording is different, but doesn't show a significant difference. Baillieres Nurses' Dictionary defines the Nodes of Ranvier as: a constriction occurring at intervals in a nerve fibre to enable the neurilemma with its blood supply to reach and nourish the axon of the nerve. And The Anatomy Colouring Book (which I have round incredibly useful and would recommend to anyone studying A&P) says of the myelin sheath: enhances impulse conduction rates and of Nodes of Ranvier: make possible rapid note-to-node impulse condution. So from this I would conclude that it's actually the presence of the myelin sheath which speeds up the transmission of nerve impulses and the Nodes of Ranvier are secondary in assisting this process.
12 Between uterus and vagina
13 c)

Good luck in your exams everyone!

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Posts: 155

aldebaran

Jul 01, 2005 5:03 pm

(@aldebaran)

Estimable Member

Joined: 21 years ago

RE: Help with A&P Questions please

Hi Sonne,

You may have taken your exam now, but here goes anyway with my idea of the answers to your questions -

1. Skin is a waterproof barrier

2. Blood supply & sweat regulate body temperature

3. Yes, I think it is masseter too

4. Transversus abdominis for coughing. (This came up in one of my exams and everyone around the room was discreetly coughing and feeling their tummy muscles!)

5. Supinator or Pronator Teres

6. Posterior lobe of pituitary secretes vasopressin which regulates water absorption in the kidneys

7. Parasympathetic

8. Blood tissue does all sorts of things - what are the options?

9. Yes, I think gluteus maximum too. A trickily worded question, this one, which came up in my A&P exam on Wednesday. (By the way, I have posted all the questions for A&P I could remember - may be of help if you haven't yet sat your exam)

10. No idea - the VEINS from the spleen join up with the hepatic portal system ...

11. According to the esteemed L Tucker, both myelin sheath AND nodes of Ranvier speed up nerve transmission... Good old ITEC strikes again perhaps?

12. Cervix lies between vagina and uterus

13. Must be C because only digestive inhibitory answer - micturition is a function of the urinary system, not the digestive.

Hope this helps. Good luck with the exam - or hope it went well!

Aldebaran
[sm=nature-smiley-008.gif]

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