Anatomy & Physiology B/C

[watermydoing14]

so v and vi are the same things, correct?

Funny, now that you mention it...That sounds right. Maybe study definition of origin, insertion, and the various ways muscle moves (dorsiflexion, supination, etc.)?

Also muscle interactions like agonistic and antagonistic muscles

[mangothecat]

@above

I attached the list of the 50 muscles that you will need to know about for this event. You should know the location, action, origin, and insertion of the muscles. I would suggest making flashcards in order to memorize the information needed. Also, if you find any muscles that come up in practice tests but aren't in the list, you should know those too. Good luck !

Honestly, I just memorize location and put the rest on my cheat sheet (takes 1/9 of page at 4pt). Anatomy is a process of memorizing and forgetting, and you don't want to be caught on the wrong end like I did .

You can memorize them yes and I had to at one point for a lab practical. However, I think it is better to have the 50 muscles origins, insertions and actions on your cheat sheet. Like most people you will forget things so just have it there as a backup plan. But you should 100% be able to look at a muscle and figure it out what it is plus you can use some logic for muscle orgins and insertions of you know where muscles are located.

I have tried memorizing the origins, insertions, and actions before, but I ended up forgetting them faster than I remember them, especially because muscles tend to have a whole lot of actions. It's a good idea to have it on your cheat sheet!
BTW, innerbody.com is a really helpful interactive site for remembering the locations.

[amydata123]

Does anyone have a good picture of the skeleton and its bones (ex: hyoid, mandible, cranium) there can show me?

Also, I do not understand what to do in skeletal system in number 4- can someone please tell me?

Thanks!

[sciolyFTW_aku]

Does anyone have a good picture of the skeleton and its bones (ex: hyoid, mandible, cranium) there can show me?

Also, I do not understand what to do in skeletal system in number 4- can someone please tell me?

Thanks!

Here is the link for a pretty detailed image of the skeleton (image was too large to attach): http://humananatomybody.info/anterior-a ... rior-body/, but you can always find more on Google Images. Also, in the skeletal system, number 4, they want you to know the structure of bones and cartilage in depth (bone cells, osteons, chondrocytes, red marrow, etc.) and the types of ossification (interstitial and endochondral). Hope this helps!

[bhavjain]

Something that really bothers me is the diagram of a hair follicle...some diagrams say that hair follicle is the whole living portion of the hair, others say the hair shaft is beneath the skin, others say the hair root is the whole hair beneath the skin, others say the hair root is the very bottom of the hair...WHICH DIAGRAM IS CORRECT?

If someone could describe each part of the hair and link me to a correct diagram, I would be very grateful...I don't want to miss everything on the labeling a hair follicle diagram because their diagram is different than the one I have learned...

Here are some diagrams that are different:






Any help is appreciated!

[Uber]

Based on medical dictionaries, hair root is the part "embedded in the follicle", and hair shaft is the part "projecting beyond the surface of the skin." So diagram 2 is incorrect. The Hair follicle IS the whole living portion, it just varies where the diagram is pointing at it. The wikipedia diagram is correct.
However, I've been putting hair shaft for what appears now to be hair root, but I always got credit so... cross your fingers?

[bhavjain]

Based on medical dictionaries, hair root is the part "embedded in the follicle", and hair shaft is the part "projecting beyond the surface of the skin." So diagram 2 is incorrect. The Hair follicle IS the whole living portion, it just varies where the diagram is pointing at it. The wikipedia diagram is correct.
However, I've been putting hair shaft for what appears now to be hair root, but I always got credit so... cross your fingers?

Thanks for the response! So in diagram 3, if the black part is the hair follicle, what is the bluish portion right adjacent to it?
Also, is the hair root alive? Is the hair shaft alive? What is the hair root exactly? What is the hair follicle exactly?

The hair follicle is the hardest diagram for me... Everything else is so easy...

[Uber]

Thanks for the response! So in diagram 3, if the black part is the hair follicle, what is the bluish portion right adjacent to it?
Also, is the hair root alive? Is the hair shaft alive? What is the hair root exactly? What is the hair follicle exactly?

The hair follicle is the hardest diagram for me... Everything else is so easy...

It looks like a representation of the connective tissue sheath (There's no other possibility), which I think is still part of the follicle. The hair root is just below the skin hair, and hair shaft is above the skin hair. They are both dead. The hair follicle consists of the dermal papilla, inner and outer epithelial sheath, and the connective tissue root sheath.

http://www.ivyroses.com/HumanBody/Skin/ ... llicle.php
The link above was helpful, and everything as far as I can tell is correct.

[bhavjain]

Thanks for the response! So in diagram 3, if the black part is the hair follicle, what is the bluish portion right adjacent to it?
Also, is the hair root alive? Is the hair shaft alive? What is the hair root exactly? What is the hair follicle exactly?

The hair follicle is the hardest diagram for me... Everything else is so easy...

It looks like a representation of the connective tissue sheath (There's no other possibility), which I think is still part of the follicle. The hair root is just below the skin hair, and hair shaft is above the skin hair. They are both dead. The hair follicle consists of the dermal papilla, inner and outer epithelial sheath, and the connective tissue root sheath.

http://www.ivyroses.com/HumanBody/Skin/ ... llicle.php
The link above was helpful, and everything as far as I can tell is correct.

Thanks for the link! Looks very accurate, except for one clarification: my textbook says that the hair follicle consists of the epithelial root sheath and dermal root sheath, as you are saying as well. However, the website says that the dermal root sheath consists of an inner and outer part, and that no such epithelial root sheath exist. My textbook seems to say that the dermal root sheath equals the connective tissue root sheath. Why is the website ignoring the presence of an epithelial root sheath? Is that the only wrong part of their diagram?

Thanks!

[Uber]

Thanks for the link! Looks very accurate, except for one clarification: my textbook says that the hair follicle consists of the epithelial root sheath and dermal root sheath, as you are saying as well. However, the website says that the dermal root sheath consists of an inner and outer part, and that no such epithelial root sheath exist. My textbook seems to say that the dermal root sheath equals the connective tissue root sheath. Why is the website ignoring the presence of an epithelial root sheath? Is that the only wrong part of their diagram?

Thanks!

Maybe not that accurate Your textbook is right. Idk why they grouped epithelial under dermal, but the epithelial root sheath is made of two parts.