CRANC

You're welcome, in advance.

 

Yes, you are missing something, but not much. The term 'voluntary' as used for the somatic nervous system (SNS) is to differentiate it from the autonomic nervous system, not to differentiate the efferent division of the SNS from the afferent divisions of the SNS.

 

A review of the main divisions of the nervours system:

 

First division: Central Nervous System (CNS) Vs Peripheral Nervous System (PNS).

 

The CNS includes all that which is encased by bone, i.e. the brain and spinal chord. The PNS is everything outside of that.

 

There are other differences, e.g. collections of nerve cell bodies in the CNS are known as nuclei, but outside of the CNS they are known as ganglia. But essentially, encased in bone (skull or vertebra) = CNS, outside of that = PNS.

 

Second division: Somatic Nervous System (SNS) Vs Autonomic Nervous System (ANS).

 

Third division 1:The SNS is divided into the Afferent and Efferent divisions. Efferent (motor) nerves leave the spinal cord via the ventral horn and afferent (sensory) nerves enter the spine vial the dorsal horn.

 

Third division 2:The ANS is divided into the sympathetic and parasympathetic divisions. The sympathetic division is responsible for activation and preparation to expend energy (fight or flight). The parasympathetic is responsible for 'stand-down'; conservation of energy. These two divisions exist in tonic balance with one another. These divisions innervate things like smooth muscle (e.g. GI tract), glands, kidneys, bladder, veins (vasodilation and constriction), pupils, sweat glands etc.. All these are outside of voluntary control

 

The somatic division of the PNS is known as 'voluntary' simply to differentiate it from the autonomic division of the PNS which, eponymously, is autonomic and outside of voluntary control.

This dood wins.

Joint capsules do not open, ever, without incredibly traumatic injury.

bad wording my friend, was late last night =] u know what i mean!

There's no way to know without knowing the genotypes of both parent flies and the nature of the dominance interaction of the allele in question.

I re read the question and we're not given the genotypes of the parent fly's, unfortunately. its just a logic based question where we make the best assumptions we can from the info we're given!

shit, hey

Merged post follows:

oh, and all the Q wants to know is does the badly worded conclusion follow the 3 hypothesis given my mendel? if so, in what way, if not, in what way.

Paralith, ty for your reply mate

tendon tissues are avascular so full recovery will take a long time. when you tear or rupture tendons the collagen fibers that grow back will never be as strong. for example: Achilles tendon collagen fibers are type 1 and when torn, only type 3 will grow back, nowhere near as strong (info from memory, correct if wrong!)

so, be careful when doing anything high impact and make sure you rehab properly!

good luck =]

gynecomastia = man boobs. you'll be fine bro, you're young, play sport and eat well and adipose distribution will decrease as you get older.

when the joint capsule opens, the synovial membrane "flushes" the joint with synovial fluid for lubrication and protection. little N bubbles build up within the joint, and, with the right force, you can pop the N bubbles.

/debate about arthritis!

I have an in class topic on the D. Melanogaster fly. we're breeding them and doing test corsses etc.

I have to answer this lat question on logic. Logic isn't my strong suit.

Below are three of Mendel's premises and a conclusion.

Does the conclusion follow logically from the three premises stated? Explain your answer. if it does not then provide an alteration to addition to the premises that would lead to that conclusion.

The three premises as follows:

1. parents do not transmit traits directly but do so through genes, which code for the traits.

2. Not all copies of genes are identical, and different alleles exist coding for different expressions of each trait.

3. each trait is governed by two alleles (gene versions) in each individual, one derived from each parent.

Conclusion: The offspring from the parental fly cross, conducted in week 2, will either show parental traits completely or not at all. they will not show traits blended from both parents.

So, there it is. any help would be appreciated. I'm new, so don't hold it against me!

This one is win.

/thread.