Cell & animal reproduction. Grade 6 Compiled by: Alya Kays. Plants reproduction. Animal Cell. The body is made up of millions of tiny cells Most of the cell is made up of protoplasm Cell parts: Nucleus Cytoplasm Cell membrane. Nucleus. Cytoplasm. Cell Membrane. Animal Cell. SHAPE.
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
Compiled by: Alya Kays
Human smooth muscle, also referred to as visceral or involuntary muscle, is composed of slender, spindle-shaped cells. Controlled by the autonomic nervous system, smooth muscle cells help form the structure of the skin, blood vessels, and internal organs.
Cardiac muscle is a unique muscle tissue found only in the heart. Requiring a constant supply of oxygen, cardiac muscle will quickly die if obstructions occur in the arteries leading to the heart. Heart attacks occur from the damage caused by insufficient blood supply to cardiac muscle.
Skeletal muscles attach to bones. They help you do things such as kick a ball, chew food, or write. When one of these muscles contracts, or shortens, the bone attached to the muscle moves. Skeletal muscles are voluntary—that is, you control when they work. Skeletal muscles consist of cells containing light and dark bands that make them appear striped.
This photomicrograph shows a number of multipolar nerve cells. The central cell body is clearly visible in each of the cells, as are the dendrites. The dendrites are short extensions of the nerve cell body that
Objective: Specify how the reproductive system for mammals functions
Estrous cycle - time from one heat period (or menstrual cycle) to the next.
Length of estrous cycle by species:
Cow 19 - 21 days
Ewe 16 - 17 days
Sow 19 - 21 days
Mare 21 - 24 days
Woman 28 days
1. Sustains the sperm and aids in its transport
2. Supports embryo and fetus during gestation
3. Expels fetus at parturition
Steps in the female reproductive process:
Ovulation Rates by Species
Cow- 1 egg per estrus
Ewe- 1 to 3 eggs per estrus
Sow- 10 to 20 eggs per estrus
Mare- 1 egg per estrus
Hen- Approx. 28 eggs per month
Gestation and Lactation Periods:
Species Gestation Period Lactation(Milking)
Cow 275 - 285 days beef 180 - 270 days dairy 305 - 365 days
Ewe 115 - 142 days 60 - 90 - 120 days
Sow 112 - 115 days 21 - 42 days
Mare 330 - 345 days 90 - 150 days
Woman 270 days ? years
The poultry oviduct has five parts:
1- A butterfly starts its life as an egg, laid by a female adult butterfly after mating. Butterfly eggs vary in size and shape, but most are surrounded by a protective hard shell.
2- A caterpillar develops within the egg and then eats its way out of the shell.
4- A caterpillar spends all its time eating. As it grows, the caterpillar becomes too large for its skin and molts (sheds its skin) to reveal new skin. Depending upon the type of butterfly, caterpillars molt four or five times.
5-Inside the chrysalis, the caterpillar changes from a wormlike creature into an adult butterfly.
6-When the butterfly reaches adulthood, it leaves the chrysalis. It pumps blood into its crumpled wings and expands them to their full size before flying away.
This powerpoint was kindly donated to www.worldofteaching.com
http://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching.
Free Powerpoint Presentations