BIOL 20 Penn State

Biology 20 Fall 2001 Lecture #2 Jan 11, 2001 What did we get from the last lecture? What is a plant? A living organism that is usually photosynthetic, usually immobile to the naked eye and has a cellulose cell wall. Plants do things fundamentally dif

Download as an RTF file Download as a PDF file Biology 20 Fall 2001 Lecture #3 Jan 16, 2001 What did we get from last lecture? Plant body comprised of cells that essentially sacks of highly organized chemicals. Classes of chemical compounds: 1 (pri

Biology141 (Physiology) 4/6/08 1:15 AM Biology141 (Physiology) Lecture 28 M. Whim THE IMMUNE SYSTEM. [1]. BACKGROUND. what is the function of the immune system? the immune system defenses used by the body can be split into 2 categories: (a). I

Lower Leg Compartments Three major: A, L, P Anterior Foot/toe dorsiflexion Lateral Foot elevators Posterior Foot/toe plantarflexion 1 Vessels Femoral A becomes the Popliteal A Around the knee there are 4 arteries: Sup Med

Lecture Outline March 7, 2008 Cardiovascular System I Anatomy of heart Layers of the heart wall epicardium myocardium endocardium (endothelium) Blood flow Two circuits: 1. pulmonary 2. systemic Heart Valves: atrioventricular valves: tricuspid (R), b

EXTERNAL ANATOMY Generally speaking, orders of mammals are recognized rather easily by their external appearance; therefore, the external anatomy of a cat will be quite different from that of a rat and vice versa. The external features which separate

OUTLINE I. Nonpituitary Hormones Help Regulate Metabolism, Homeostasis, Develoment and Behavior a. Thyroid hormones i. Thyroid gland 1. triiodothyronine (T3) a. receptors have greater affinities for T3 2. thyroxine (t4) a. target cells convert t4 to

Organ Systems Mammalian Organ Systems Organs and related tissues can be divided into systems. Systems are not independent of each other Ex. The muscular system need both the cardiovascular and nervous systems, as well as the skeletal system Sys

Biology141 (Physiology) 4/6/08 1:03 AM Biology141 (Physiology) Lecture 12 M. Whim NEUROTRANSMITTERS. [1]. BACKGROUND. there are 2 classes of neurotransmitter receptors: 1. Ligand-gated channels - the transmitter receptor is also an ion channel. 2.