Animalscaretips
Human kidneys can only make urine that is less salty than salt water. Therefore, to get rid of all the excess salt taken in by drinking seawater, you have to urinate more water than you drank.
- Why is it important for testes in pigs and other mammals?
- Why is it necessary for the trachea to have rings of cartilage in its walls?
- Why is the pulmonary circulation bypassed in the unborn fetal pig and how is it bypassed?
- What must happen for the lungs to expand allowing you to inhale?
- Do female pigs have vaginas?
- How much sperm does a pig release?
- What is the function of the rings of cartilage in the trachea and bronchi quizlet?
- What are tracheal rings?
- Why is the pulmonary circulation reduced in the human fetus?
- What is fetal circulation?
- How does fetal pig blood circulation differ from blood circulation in a fully developed pig?
- What happens when the lungs expand?
- What process occurs during inhalation?
- What are the changes that take place during inhalation and exhalation?
- Do sows have clitoris?
- Do pigs have balls?
- What is the vaginal orifice pig?
Why is it important for testes in pigs and other mammals?
Why is it important for the testes in pigs and other mammals to completely descend into the scrotum? Normal sperm production requires a temperature lower than body temperature. ... The male keeps producing sperm during most of its lifetime, but the female is born with all the eggs that it will ever produce.
Why is it necessary for the trachea to have rings of cartilage in its walls?
In the trachea, or windpipe, there are tracheal rings, also known as tracheal cartilages. Cartilage is strong but flexible tissue. The tracheal cartilages help support the trachea while still allowing it to move and flex during breathing. ... These are the first and last rings in the trachea.
Why is the pulmonary circulation bypassed in the unborn fetal pig and how is it bypassed?
The fetal circulatory system uses 3 shunts. These are small passages that direct blood that needs to be oxygenated. The purpose of these shunts is to bypass the lungs and liver. That's because these organs will not work fully until after birth.
What must happen for the lungs to expand allowing you to inhale?
When you breathe in, or inhale, your diaphragm contracts and moves downward. This increases the space in your chest cavity, and your lungs expand into it. The muscles between your ribs also help enlarge the chest cavity. They contract to pull your rib cage both upward and outward when you inhale.
Do female pigs have vaginas?
The vagina is approximately 12-18 inches long and connects the cervix to the external genitalia of the pig. There is limited muscular and glandular tissue in the vagina and it serves primarily as a copulatory organ for the boar and as a passageway from the uterus to the outside.
How much sperm does a pig release?
Semen volume varies between 100 and 500 mL; a large volume does not mean the total spermatozoa content is greater than that from smaller ejaculates.
What is the function of the rings of cartilage in the trachea and bronchi quizlet?
The rings of cartilage provide stability and help to prevent the trachea from collapsing and blocking off the airways. The trachea extends from the neck and divides into two main bronchi. Structurally similar to the trachea, the two primary bronchi are located inside the lungs.
What are tracheal rings?
Complete tracheal rings are a birth defect in the cartilage rings that keep the trachea, or windpipe, from collapsing. A normal tracheal cartilage is C-shaped with a softer, posterior membrane consisting of muscle. In complete tracheal rings, the trachea is made with several or more O-shaped rings.
Why is the pulmonary circulation reduced in the human fetus?
With the first breaths of life, the lungs start to expand. As the lungs expand, the alveoli in the lungs are cleared of fluid. An increase in the baby's blood pressure and a major reduction in the pulmonary pressures reduce the need for the ductus arteriosus to shunt blood. These changes help the shunt close.
What is fetal circulation?
Fetal circulation: The blood circulation in the fetus (an unborn baby). Before birth, blood from the fetal heart that is destined for the lungs is shunted away from the lungs through a short vessel called the ductus arteriosus and returned to the aorta.
How does fetal pig blood circulation differ from blood circulation in a fully developed pig?
Fetal circulation is different from adult circulation. In the fetus, blood doesn't get oxygenated in the lungs; it gets oxygenated at the placenta. ... Second, in the fetal heart, there is an opening between the right atrium and the left atrium. This opening is called the foramen ovale.
What happens when the lungs expand?
When you breathe in by enlarging the chest cage, the "balloons" expand as air rushes in to fill the vacuum. When you breathe out, the "balloons" relax and air moves out of the lungs. Tiny blood vessels surround each of the 300 million alveoli in the lungs.
What process occurs during inhalation?
During the process of inhalation, the lung volume expands as a result of the contraction of the diaphragm and intercostal muscles (the muscles that are connected to the rib cage), thus expanding the thoracic cavity. Due to this increase in volume, the pressure is decreased, based on the principles of Boyle's Law.
What are the changes that take place during inhalation and exhalation?
During inhalation, the lungs expand with air and oxygen diffuses across the lung's surface, entering the bloodstream. During exhalation, the lungs expel air and lung volume decreases.
Do sows have clitoris?
Vulva: external genital part, it is externalized with two lips, at the bottom of them is the clitoris. The vulva is highly vascularized, changing its morphological appearance during the heat, being much more inflamed and edematous.
Do pigs have balls?
Testes. The testes are the primary organs of reproduction in the male pig and they are responsible for producing hormones and sperm. They are contained in the scrotum and are comprised of a complex network of ducts known as seminiferous tubules.
What is the vaginal orifice pig?
The urethral opening excretes urine and the vaginal orifice is the opening of the birth canal. In males, the urogenital structures consist of the penis (which has an opening just behind the umbilical cord)and two sac-like swellings called the scrotum, containing the testes.
