Lab 3b - Growth and Development Flashcards
1
Q
-blast
A
to sprout
2
Q
cyt-
A
Cell
3
Q
derm-
A
skin
4
Q
ecto-
A
outside of
5
Q
en-, endo-
A
within
6
Q
meso-, medio-
A
middle
7
Q
teras-, terat
A
monster
8
Q
toti-
A
whole
9
Q
What is growth?
A
- Increase in size and weight of tissues (bone, muscle, organ)
- Increase in amount of protein and mineral accumulated in the body
- Excludes Adipose tissue
10
Q
What is edema?
A
- The retention of water
11
Q
What 2 ways does growth occur?
A
- Hypertrophy
- Hyperplasia
12
Q
What is Hypertrophy?
A
- Increase in cell size through an increase in organelle size
EX: postnatal growth (muscle and nerve cells)
13
Q
What is Hyperplasia?
A
- Increase in cell numbers (mitosis)
- Tissues that under go hyperplasia during postnatal growth
- Skin, Blood, capillaries, liver, and adipose tissue
- Prenatal
14
Q
What are the two different types of growth?
A
- Determinate growth
- Indeterminate growth
15
Q
What is Determinate growth?
A
- Body grows to a certain point (maturity) and then ceases
EX: birds and mammals
16
Q
What is Indeterminate growth?
A
- Growth continues throughout the lifetime of the individual
EX: fish, reptiles, amphibians
17
Q
What is Development?
A
- Change in form and function
- Series of uninterrupted events
18
Q
What is Cellular Differentiation?
A
- Cells become more specialized (liver, muscle, skin cells)
- All originate from single fertilized ovum
19
Q
What is Morphogenesis?
A
- establishment of shape and patterns in an animal
20
Q
What is Morphology?
A
- The study of form and structure
21
Q
What is Embryology?
A
- Study of the period of time from fertilization to birth
22
Q
What is fertilization?
A
- Combining of sperm and ovum = zygote
23
Q
What is a Zygote?
A
- Fertilized Ovum
24
Q
What is Zona Pellucida?
A
- Protective layer that surrounds and protects the mammalian oocyte
- Structure that sperm penetrate to fuse and fertilize the ovum
25
Q
What is Cleavage?
A
- Sequential cell divisions immediately following fertilization
- Cell size decreases
26
Q
What are Blastomeres?
A
- Undifferentiated cells formed during cleavage
27
Q
What is a Morula?
A
- Solid ball of cells
- Mulberry shaped
28
Q
What is Blastulation?
A
- Conversion of the morula into the blastocyst
- Formation of trophoblast cells, inner cell mast cells, and blastocoel cavity
29
Q
What is a Blastocyst?
A
- Hollow ball that is one cell layer thick around a fluid-filled cavity
- Results in trophoblast and inner cell mass
30
Q
What are Trophoblast cells?
A
- Outer layer of the blastocyst
- Outermost layer of the placenta