s circula- opening. These come together to form a small spike-like pro papilla.
ID: 3482702 • Letter: S
Question
s circula- opening. These come together to form a small spike-like pro papilla. Beneath the papilla is the, the roject ical arter- ind legs. tile organ homologous to the male oris . The feet to examine pigs of both sexes leg bends e peni al openingQuestions 1. Approximately how many days from ferti. ur pig is, ales, there he umbili- , the open- hould find e anus and s, the scro- young pig, d from the ization would your pig be if it measured 2 inches in length? (Hint: First, convert to cm. 2. Why is the skin such an important organ? List some of the functions of the skin. 3. Why does inhaled air need to be warmed, filtered, and moistened? 4. How do materials pass back and forth between the fetus and the mother? ening that ry organs. side of the 5. What is the function of the hard palate?Explanation / Answer
A:1. First trimester of pregnancy.Gestation would be about 114 -116 days.
2.skin is the largest and important organ of body.
skin protect boby from harmful microbes infection.
It protects bones,muscles,internal organs from injury.
It regulates body temperature evenly.
skin makes vitamin D from sunlight which is important for bones and body.
Skin produce more melanin pigment to protect body from UV exposure.melanin protect skin from UV light
skin is full of nerve ending help to feel hot,cold and pain
Function of skin:
skin acts as protective barrier against extreme temperature,exposure to harmful bacteria and infections,wind and protect body from UV rays,
skin acts as thermoregulator maintains body temperature.In cold shivering hepls to warm up body and blood vessels contract to prevent from cooling.In hot blood flows capillaries increases and sweat gland produce sweat.
Skin acts as sense organ.nerve receptor in skin alort brain to feel senses such as hot,cold and pain
skin produce vitamin D when exposure to sunlight.vitamin D is essential for bones in body and for body
3.Inhaled air need warm to breate beacause to regulate body temperature.Nasal passage filter the air to remove disease causing particle and warm the air to maintain structure of respiratory system.if temperature is too cold body cannot able to regulate it and body function affected
Air needs to filter because it can damage lungs if dirty air breath.so air to be filtered to keep from drying out lungs and harming the delicate tissues from outside bacteria.
Air need to be moistened because of presence of mucus and harmful particles filtered by nasal hair and micro cillia in nasal cavity
4.Fetus connected to placenta by a tube called umbellical cord.placenta serves as medium to circulate from mother and fetus.Umbelical cord contain two arteries and one vein.throuth placenta and cord nutrients and oxygen pass from mother to fetus.cabon dioxide,urea and other waste products diffuse from fetus through placenta to mother's blood.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.