Outside vertebrates, the animal with the highest brain:body ratio is...
Ans ... octopi
Lack Neurons:
Ans No nervous system (songes and placozoas)
Nerve Net:
Ans Uniformly distributed neurons (Cnidarians, jellyfish)
Centralized Nervous System:
Ans Centralized in one spot, usually head. Usuall...
BIOB34 Final Exam Questions and Correct Answers Outside vertebrates, the animal with the highest brain:body ratio is... Ans ... octopi Lack Neurons: Ans No nervous system (songes and placozoas) Nerve Net: Ans Uniformly distributed neurons (Cnidarians, jellyfish) Centralized Nervous System: Ans Centralized in one spot, usually head. Usually bilateral body symmetry (Chordates, spiders, insects, and molluscs) Nervous system is not independent of influence as seen in... Ans ... migratory bats which lose mass from neocortex to reduce weight Sponges can signal porocytes to turn off without neurons by using... Ans ... syncytium, a single multinucleate sheet Reflex Only Principle: Ans Neuron al detection causes instant and unconscious movement Cephalization: Ans Develop brain in head (anterior) of animal Dendrites: Ans Collect electrical signals Cell Body (Soma): Ans Integrates input and generates output to axon Axon: Ans Conducts electric signal to presynaptic terminal Presynaptic Terminal: Ans Transmits signal to next cell All cells have an electric potential, but neurons... Ans ... change theirs ECF is rich in... Ans ... Na and Cl ICF is rich in... Ans ... K If ions were able to freely move across membrane... Ans ... there'd be no membrane potential Equilibrium Potential: Ans When concentration gradient force and electrical force balance out Nernst Equation:
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller TestTrackers. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.49. You're not tied to anything after your purchase.
