New User Special Price Expires in

Let's log you in.

Sign in with Facebook


Don't have a StudySoup account? Create one here!


Create a StudySoup account

Be part of our community, it's free to join!

Sign up with Facebook


Create your account
By creating an account you agree to StudySoup's terms and conditions and privacy policy

Already have a StudySoup account? Login here

BSC 215- Week 2 Notes

by: Alexia Acebo

BSC 215- Week 2 Notes BSC 215

Alexia Acebo
GPA 3.7

Preview These Notes for FREE

Get a free preview of these Notes, just enter your email below.

Unlock Preview
Unlock Preview

Preview these materials now for free

Why put in your email? Get access to more of this material and other relevant free materials for your school

View Preview

About this Document

A collection of the second week of notes from BSC 215! These include all Learning Outcomes and explanations alongside further information!
Human Anatomy & Physiology I
Dr. Jason Pienaar
Class Notes
anatomy, Physiology, BSC 215
25 ?




Popular in Human Anatomy & Physiology I

Popular in Biological Sciences

This 7 page Class Notes was uploaded by Alexia Acebo on Friday January 22, 2016. The Class Notes belongs to BSC 215 at University of Alabama - Tuscaloosa taught by Dr. Jason Pienaar in Summer 2015. Since its upload, it has received 26 views. For similar materials see Human Anatomy & Physiology I in Biological Sciences at University of Alabama - Tuscaloosa.

Similar to BSC 215 at UA

Popular in Biological Sciences


Reviews for BSC 215- Week 2 Notes


Report this Material


What is Karma?


Karma is the currency of StudySoup.

You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 01/22/16
BSC 215- Week 2 Notes Lecture 1 -Anatomy and Physiology Core Principles- Learning Outcomes: 1. What are the 7 characteristics of life? 2. Major structural levels of organization 3. Principle of homeostasis 4. How negative and positive feedback loops regulate homeostasis 5. How are structure and function related? 6. Define gradient using examples physiological processes 7. Explain how cells communicate with each other LO 1. 7 Characteristics of Life **Living things have: a (1) cell membrane and (2) hereditary material 1. Homeostasis 5. Adaptation 2. Organization 6. Response to Stimuli 3. Metabolism 7. Reproduction 4. Growth -single-celled=pop. Growth -multi= grow in size LO 2. Describe major structural levels of organization of the human body See figure in text  Chemical o Cellular  Tissue  Organ o Organ system  Organismal LO 3. Describe the principle of homeostasis DEFINITION: The creation and maintenance of a relatively stable internal environment to facilitate the numerous physiological processes that cells undergo. **Internal environment is determined by physiological variables Temp., pH, [blood glucose], osmotic balance, [blood O 2CO 2, Vitamin D levels (not regulated) Regulation by: DEFINITION: set point=avg. value in normal range **Room temp. Example: Begins with stimulus of room temp. below set point **Human Body example: Begins with stimulus of core body temp below set point LO 4. Explain how (-) and (+) feedback loops maintain homeostasis  Change in regulated variable results in effects that feedback to the same variable LO 5. How are structure and function related? **Form follows function at all levels of organization EX- lung tissue IN respiration The tissues in he lung are thin, allowing gases to cross rapidly LO 6. Define gradient using examples that drive physical processes LO 7. Explain how cells communicate with each other and why its essential for multicellular organisms **cell to cell communication is required to coordinate physiology and maintain homeostasis Chemical Signaling:  Endocrine  Paracrine  Autocrine  Juxtacrine Electrical Signaling In order to signal: 1. Ability to generate signal 2. Ability to recept CLICKER QUIZ (1/19)  Group of cells working together to complete common function o Tissue  All living organisms composed of 1 or more cells o True  Which statement is false? o (+) feedback loops work in (-) feedback loop fashion  A gradient exists when: o All temperature, concentration, pressure  Not one of 7 characteristics o Ability to conduct Lecture 2 -Matter, Energy and Enzymes- Learning Outcomes 1. Electrons, protons, neutrons-distinguish atomic number and mass number 2. Compare/contrast atoms with elements and identify 4 major elements 3. What are isotopes and radioisotopes? 4. Distinguish between solutions, solvents, colloids and suspensions 5. Describe how the valence shell determines chemical reactivity 6. What are ions and electrolytes? 7. Compare/contrast ionic, non-polar covalent, polar covalent and hydrogen bonds using examples INTRO Matter: Anything that has mass and takes up space -mass (always the same) vs. weight (different by locale) States: -solid-defined shape and volume -liquid-undefined shape, defined volume -gas- undefined shape and volume LO 1. Describe elecrons, protons and neutrons and distinguish atomic number from mass number Atoms (usually) consist of:  Protons, neutrons, electrons - Atomic #=proton #  Atoms have mass: - Protons and neutrons each weigh 1 AMU, electrons are negligible  Atomic mass= n(protons)+n(neutrons)  Atoms are (usually) electrically neutral - N(protons)(+)=n(electrons)(-) LO 2, Compare and Contrast atoms with elements and identify he 4 major elements found in the body Element: simplest form of matter to have unique chemical properties EX water molecule **A proton is always a proton MOST prevalent bond in body= covalent bond 4 major macromolecules: Lipids, Carbs, proteins, nucleotides  made up of C,N,O and H (4 MAJOR ELEMENTS) LO 3. What are isotopes and radioisotopes? !!!Atoms that differ ONLY in the # of neutrons!!!!  and therefore mass Atomic Weight: weighted average mass of all isotopes for that atom  Isotopes chemically behave the same way -BUT physically unstable isotopes (radio) decay **Physical half life: constant (average) VS> **Bio half life: how often molecules are recycled In the body Hydrogen Isotopes HydrogenDeuterium (1 neutron) Tritium (2 neutrons) LO 3. What are isotopes and radioisotopes? -Radioisotopes emit high energy radiation as their nuclei decay o Low penetrance o Particles don’t travel far o Alpha and beta particles o Alpha: Don’t move very far o Nucleus ejects 2 protons and neutrons o Beta: 1 electron doesn’t go far, absorbed by something else o High Penetrance o Often results in cancer, damage to genes o Gamma rays  High energy photons  Act at a distance !!! ALL produce dangerous ions and free radicals!!! LO 4. Distinguish solutions, solvents, colloids and suspensions 2 Ways to Combine matter: 1. Mixtures a. Different atoms combined to retain their chemical properties and can be physically separated 1. Suspensions: blood 2. Colloids: milk 3. Solutions: glucose and water 2. Chemical bonds a. Combined to have new chemical properties and the resulting molecules can only be separated chemically LO 5. Describe how the valence shell determines chemical reactivity Octet/Duet rule trying to get 8 electrons in outer shell **Lowest energy state= stable (already) Covalent sharing (STRONG) Ionic Donation (NEG,POS) LO 6. What are ions and electrolytes? Ions= charged particles (elements/ molecules) **Unequal # of protons and electrons -Ionization o Octet rule o Atoms with less than 4 valence electrons give them up  Cations (+) o Atoms with more than 3 and less than 8 valence electrons gain more  Anions (-) -Electrolytes=substances that ionize in water ( can conduct electricity) anions and cations are separable LO 7. Compare and contrast ionic, non polar covalent, polar covalent and hydrogen bonds using biological examples o Ionic- transfer of electrons between atoms o Non polar covalent- equal sharing o Polar covalent- unequal sharing (partial charges) o H bonds- attractions between polar molecules (partial) o Van de Waal’s- brief attractions between temp. polar molecules Clicker Quiz (1/22)  4 major elements in human body o C, O, N, H  Isotope: o Same atomic #, different mass  Lithium- atomic #3, mass #7 o 3 protons, 4 neutrons, 3 electrons  Muddy sample o Suspension  Molecule of Hyd. Able to form bonds with water o false


Buy Material

Are you sure you want to buy this material for

25 Karma

Buy Material

BOOM! Enjoy Your Free Notes!

We've added these Notes to your profile, click here to view them now.


You're already Subscribed!

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

Why people love StudySoup

Jim McGreen Ohio University

"Knowing I can count on the Elite Notetaker in my class allows me to focus on what the professor is saying instead of just scribbling notes the whole time and falling behind."

Kyle Maynard Purdue

"When you're taking detailed notes and trying to help everyone else out in the class, it really helps you learn and understand the I made $280 on my first study guide!"

Bentley McCaw University of Florida

"I was shooting for a perfect 4.0 GPA this semester. Having StudySoup as a study aid was critical to helping me achieve my goal...and I nailed it!"

Parker Thompson 500 Startups

"It's a great way for students to improve their educational experience and it seemed like a product that everybody wants, so all the people participating are winning."

Become an Elite Notetaker and start selling your notes online!

Refund Policy


All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email


StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here:

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to

Satisfaction Guarantee: If you’re not satisfied with your subscription, you can contact us for further help. Contact must be made within 3 business days of your subscription purchase and your refund request will be subject for review.

Please Note: Refunds can never be provided more than 30 days after the initial purchase date regardless of your activity on the site.