Rat Dissection Pdf
Home Professional Learning. The lab books and diagrams available to you are supplemental. You will not need to use a scalpel. Double injected refers to the arteries being filled with a red latex, and the veins being filled with blue latex. We will come back to the heart later.
Rat Dissection Guide
Investigation Rat Dissection
Triceps brachii - located on the sides and back of the upper arm. Gluteus Maximus - located on the lower back and rear. Urogenital System The excretory and reproductive systems of vertebrates are closely integrated and are usually studied together as the urogenital system.
The pancreas produces digestive enzymes that are sent to the intestine via small ducts the pancreatic duct. Offers a foundation, and activities. On this image, the heart and thymus are obscured by fatty tissue at the top of the heart. To maintain its integrity, shipping options will be limited to one- or two-day methods to a physical address during certain times of year. Compare the location of the urethral orifice on male and female rats.
How does the anatomy of a female rat differ from that of a human? The Reproductive Organs of the Female Rat The short gray tube lying dorsal to the urinary bladder is the vagina. Scissors serve better because the point of the scissors can be pointed upwards to prevent damaging organs underneath. They won't let you down, no matter what they're up against. They come stored in a preserving fluid, Offers a foundation, and activities.
Ninth grade Lesson Comparative Anatomy - How Do We Compare
The duodenum is the first stretch of the intestine leading from the stomach, it is mostly straight. The provided graphic organizer will assist students in analyzing their knowledge and encouraging them to create connections in a cohesive essay. The teacher will conduct formative assessments of the students to gauge comprehension and provide any necessary supplemental discussion. These summary reports for the earthworm, crayfish, and rat identify unique qualities of each anatomical body system.
When you rat dissection lab worksheet answers ahead The FindLaw the Yahoo. You will get to know and love your preserved rat over the course of this dissection. Explore - Students are reminded of the images, facts, israel shahak pdf and experiences they observed during our Comparative Anatomy Dissection Labs.
Just anterior to the scrotal sacs is the prepuce, which is a bulge of skin surrounding the penis. Rat External Anatomy Procedure Obtained your rat. They are soft spongy tissue that secrete saliva and amylase an enzyme that helps break down food. The small intestine is a slender coiled tube that receives partially digested food from the stomach via the pyloric sphincter. Contrary to popular belief, a scalpel is not the best tool for dissection.
It is associated with the circulatory system and functions in the destruction of blood cells and blood storage. Use the provided links to access prior lessons that capture these lessons and instructional strategies in more detail.
Dissecting tools will be used to open the body cavity of the rat and observe the structures. Pin the organs of the urogenital system.
The heart is centrally located in the thoracic cavity. The lumpy brown glands located to the left and right of the urinary bladder are the seminal vesicles.
Rat Dissection Introduction
The urethra carries urine from the bladder to the urethral orifice this orifice is found in different areas depending on whether you have a male or female rat. The lungs are spongy organs that lie on either side of the heart and should take up most of the thoracic cavity.
The coils of the small intestine are held together by a membrane called the mesentery. This task is best accomplished with scissors and forceps where the skin is gently lifted and snipped away from the muscles. They're not happy until you are. The ears are composed of the external part, called the pinna. Eyes are usually pink or black with a black pupil and covered by a nictitating membrane.
Locate the cortex the outer area and the medulla the inner area. The larynx is the voicebox, and allows rats to make squeaking noises. The diaphragm may have been cut when you opened the thoracic cavity. Be careful not to cut to deeply and keep the tip of your scissors pointed upwards.
The pancreas also secretes insulin, which is important in the regulation of glucose metabolism. Once an incision is made, the rats can be drained of fluid. As the second leading theme, pay attention to the relationships among organs and groups of organs. Identify the following muscles and place a different colored pin in each. The specimen you will receive is a preserved double-injected specimen.
Make sure you know each of the highlighted words. See if you can find the others also. It is easiest to locate where it enters the stomach. This membrane can be drawn across the eye for protection. You will notice various incisions on the external surface of the rat where the latex was injected.
Always raise structures to be cut with your forceps before cutting, so that you can see exactly what is underneath and where the incision should be made. Introduction In this laboratory exercise, the anatomy of the rat will be examined in some detail.
You are expected to have exhausted all possibilities in attempting to located structures before asking for assistance. In this class, a much more detailed look at mammalian anatomy will be conducted. Our products are durable, reliable, and affordable to take you from the field to the lab to the kitchen. The rectum temporarily stores feces before they are expelled from the body.
Pin the organs of the digestive cavity. The colon is also known as the large intestine. External Oblique - located on the sides of the abdomen. The seminal vesicles and the prostate gland secrete materials that form the seminal fluid semen.
The trachea is identifiable by its ringed cartilage which provides support. Students will collaborate in small groups students to synthesize all potential similarities and differences between their three selected body systems and how they each relate to our human anatomy. The larynx is the voice box, and it allows rats to making squeaking noises. The liver has many functions, one of which is to produce bile, which aids in digesting fat. What is the function of the excretory system?
Never cut more than is absolutely necessary to expose a part. Be careful not to cut too deeply and keep the tip of your scissors pointed upwards. Microscope Coloring- very simple worksheet on parts. The excretory and reproductive systems of vertebrates are closely integrated and are usually studied together as the urogenital system.
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