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UCD - ANSC 002 - Study Guide - Midterm

Created by: Mackenzie Hayes Elite Notetaker

Schools > University of California - Davis > Animal Science > ANSC 002 > UCD - ANSC 002 - Study Guide - Midterm

UCD - ANSC 002 - Study Guide - Midterm

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background image ANS 2: Midterm Exam #1 Study Guide    Animal Behaviour:   The actions and reactions of an animal  Ethology:​  study of animal behaviour  Applied Ethology: study of interaction with humans  Timbergen:  (One of Founding Fathers of Ethology) ​ 4 questions:  Proximate Causation:  What causes the behaviour?  Development:  How does it change over the animal’s life?  Function:  How does it aid the animal’s survival?  Evolution:  How has it come about over the course of evolution?  One Newer Question:  Affect:   What does the behaviour mean to the animal?  Assessing observed phenomena:  ■ ⅔  of birds have keel bone damage  Measuring Behaviour:  Who do you sample?  Ad-lib​ : whoever you happen to see  Focal​ : select one or few  Scan​ : group as a whole  How often do you sample?  Continuous​ : throughout set amount of time  Instantaneous:​  divided into exact time intervals (ie every 3 min)  One-zero:​  if behaviour was done in interval at all (yes / no)  California livestock-based annual income: ($)  Milk + Cream ~ 9 billion  Cattle + Calves ~ 4 billion  Chicken + Eggs ~ 1.5 billion  Turkey ~ 230 million   Hogs + Pigs ~ 40 million  Aquaculture ~ 13 million  Immediate ancestors to domestic species are ​ biologically the same  animals   Yet considered to be a ​ different species  Bladder:  always serves as a “landmark” 
background image REPRODUCTION:  Sperm = smallest cell in body  MALES:  General Anatomy:  Vas Deferens / Ductus Deferens:  Transportation of sperm for ejaculation  Seminiferous Tubules:   Site of ​ spermatogenesis  - production of immature sperm  Sertoli Cells:​  nourish sperm + help them mature w/ ​ FSH  Leydig Cells:​  produce testosterone when stimulated w/ ​ LH  Epididymis:  Aids sperm maturation (takes 6 weeks to mature)  Transport to vas deferens  Accessory Glands:   Add extra components to seminiferous fluid  Ampullary, Vesicular, Prostate, Bulbourethral   Pampiniform Plexus:  Regulates in and outgoing blood temperature in testes  Testes:​  (within Scrotum)  Produce sperm and testosterone   
background image   Spermatogenesis:  Takes place in seminiferous tubules   Spermatogonial Cells​ : go through meiosis  Replicate DNA (2N, 2C → 2N, 4C)  Becomes 4 haploid sperm (1N, 1C) (or duplicates itself)  Spermatids:​  haploid cells produced from spermatogonial dividing  Continuous process (keep producing throughout lifetime)  Hormones: *be able to reproduce table*  GnRH:​  released by hypothalamus to stimulate FSH + LH release  FSH:​  stimulates sertoli cells in testes   LH:​  stimulates testosterone production by leydig cells  Hypothalamus → GnRH  Stimulates anterior pituitary → FSH + LH  Feedback:  Positive: promotes further production  Negative: inhibits further production 
background image   FEMALES:  Egg = biggest cell in body  General Anatomy:  Ovary:  Theca Cells:   Stimulated by ​ LH  → produce ​ androgens  Granulosa Cells:   Stimulated by ​ FSH  → produce ​ estrogen   Eventually antrum forms as follicle matures  Corpus Luteum:​  (CL)  Forms after ovulation → ​ progesterone   UNLESS no implantation (not pregnant)  Luteal Cells:  Cells of CL that produce ​ progesterone  Corpus Albicans:​  (CA)  Regressed form of CL if not pregnant  Infundibulum:  

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School: University of California - Davis
Department: Animal Science
Course: Introductory Animal Science
Professor: James Murray
Term: Spring 2016
Tags: animal and Science
Name: ANS 2: Midterm 1 Study Guide
Description: This study guide narrows down what is necessary to know from the notes for Midterm 1. All material was selected based off of what Dr. Murray said was necessary to know, and diagrams and lecture slides are added in to help you study. Good luck!
Uploaded: 04/17/2016
14 Pages 116 Views 92 Unlocks
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