Embryonic stage - Study guides, Class notes & Summaries

Abiotic disorder - Answer- A non-pest plant stress such as improper nutrition, too much or too little water, winter or frost injury Action threshold - Answer- The pest density at which action (such as pesticide application) is justified to prevent further damage. Adelgid - Answer- An insect closely related to aphids that feed on conifers. Their feeding often causes galls to form. Aesthetic injury level - Answer- The point at which damage from a pest becomes noticeable enough to negative...

What layer do neural crest cells develop from? Ans: Ectoderm At what embryonic age does the dental lamina begin to develop? Ans: 6 weeks What are the three components of the tooth bud? Ans: Enamel Organ Dental papilla Dental sac What are the three morphologic stages of a developing tooth bud? Ans: Bud stage Cap stage Bell stage GRADE A+ During the bell stage invagination of the epithelium occurs, which layer is essential for enamel production? Ans: Stratum intermedium Which cel...

Nursing 1390 Test Questions Final Review The developmental theories of Freud, Piaget, and Erickson have the following characteristic in common - ANS Certain tasks or behaviors must be accomplished before the next stage of development can be reached The abnormal finding in an evaluation of growth and development for a 6 month old infant would be: - ANS Head lag present The ID is the concept of the mind that is present - ANS At birth A one year old has learn...

Keys to a healthy pregnancy 1) adequate vitamins and minerals 2) healthy body weight 3) controlling health conditions 4) avoid teratogens 2. Teratogens Compounds that can increase the risk of a birth defect. 3. Examples of teratogens: 1) Tobacco: miscarriage, stillbirth, LBW, preterm 2) Alcohol: fetal alcohol syndrome 3) Drugs: LBW, miscarriage, birth defects 4. 4 Key pregnancy stages: Fertilization, Blastogenic, Embryonic, Fetal 5. Blastogenic stage (Day 1 to 14): A period of ra...

ANSC 3040 Final Questions With Complete Solution 2024 What characterizes an Ootid to go to a Zygote and what is this process called Correct Answer: fusion of the two nuclei to one. called Syngamy What characterizes the change from a Zygote to a 2 cell embryo Correct Answer: the one cell embryo will undergo cleavage and become a 2 cell What are 7 stages of early embryonic development Correct Answer: 1. Ootid 2. Zygote 3. 2-cell embryo 4. Morula 5. Early blastocyst 6. Hatching Blast...

WHAT ARE THE THREE FUNCTIONS OF THE PLACENTA? -to provide for the transfer and exchange of substances. -to act as a barrier to certain substances. -to function as a endocrine gland by producing hormones. WHEN DOES THE PLACENTA BEGIN TO DEVELOP? THE FETUS DOES NOT RECEIVE IMMUNITY TO WHAT? ese pathogens during her pregnancy, fetal infection may occur. Some pathogens can cause birth defects. WHAT HORMONES DO THE PLACENTA SECRETE TO HELP SUSTAIN A PREGNANCY? Progesterone, estrogen...

epigenetics - ANSWER- How environment impacts genes/gene expression - How genes change over time depending on environment and passed thru generations - A heritable change 3 roles of the nurse in epigenetics - ANSWER1. *Understand epigenetics so you can interpret related basic science and health research* 2. *Research on epigenetic and health outcome changes associated with health events* 3. *Patient education* Pre-embryonic stage of development: what weeks what are the 2 causes...

BIOD 121 MODULE 6 EXAM LATEST UPDATED 2024 key developmental stages - Fertilization Blastogenic stage Embryonic stage End of first trimester Fetal Stage Tobacco use can - increase the risk for miscarriage, stillbirth, preterm delivery, and low birth weight infants Alcohol use - is linked to a risk for fetal alcohol syndrome, which results in physical and mental disabilities and growth retardation drug use - increases the risk for low birth weight, preterm delivery, miscarriage...

Healthy pregnancy adequate intake of vitamins and minerals healthy body weight controlling existing health conditions avoidance of teratogens Teratogens compounds that can increase the risk of a birth defect caffeine, drugs, alcohol, and tobacco. Tobacco: miscarriage, stillbirth, preterm delivery, and low birth weight infants alcohol: FAS, physical and mental disabilities and growth retardation drugs: low birth weight, preterm delivery, miscarriage, birth defects, and infant addiction. ...

Development Psychology - correct answers Universal Aspects of lifespan development from conception though death; identifies cultural variations - Explores physical, cognitive, social and emotional development - Looks at elements of continuity and change over time Prenatal Development - Germinal Phase - - correct answers conception - 2 weeks Zygote: fertilized egg divides and implants itself in the wall of the uterus Placenta: structure that allows oxygen and nutrients to pass into fe...