What structure allows you to flow freely in the warm fluid surrounding you before you were born?

What structure allows you to flow freely in the warm fluid surrounding you before you were born?

What structure allowed you to float freely in the warm fluid surrounding you before you were born? Explain how the placenta serves as several organs for a baby developing inside its mother’s body. The placenta allowed exchanges between your blood and your mother’s blood.

What is the name of the portion of the body which houses most of the vital organs?

abdomen
The abdomen is defined as the portion of the body between the diaphragm and the pelvis. It houses many of the major organs of the body. The liver is the largest gland in the body, weighing from 1200 to 1600 grams (3 pounds) in an adult.

What is a group of organs that function together as a unit to perform a definite job for the body?

Tissues are groups of similar cells that have a common function. An organ is a structure that is composed of at least two or more tissue types and performs a specific set of functions for the body. Many organs working together to accomplish a common purpose is called an organ system.

What liquid helps keep the body cells clean and balanced with water?

The lymphatic (lim-FAT-ik) system works to keep body fluid levels in balance and to defend the body against infections. It is made up of a network of lymphatic vessels that carry lymph — a clear, watery fluid that contains proteins, salts, and other substances — throughout the body.

Which best describes epithelial tissue?

Epithelial tissues are widespread throughout the body. They form the covering of all body surfaces, line body cavities and hollow organs, and are the major tissue in glands. They perform a variety of functions that include protection, secretion, absorption, excretion, filtration, diffusion, and sensory reception.

Which of the following membranes makes up the largest organ in the body?

The integumentary system of human skin and accessory structures comprise the largest organ in the body. Explore the functions and layers, including the epidermal layer, and review and understand the purposes of the stratums, including basale, spinosum, granulosum, lucidum, and corneum.

What is the organs that work together?

Organ systems An organ system is a group of organs that work together to do a job. The circulatory system includes the heart, veins and arteries. Its function is to transport substances in the blood, around the body. The respiratory system includes the nose and the lungs.

What do organs that work together form?

Organs are grouped into organ systems, in which they work together to carry out a particular function for the organism. For example, the heart and the blood vessels make up the cardiovascular system.

What brown pigment determines skin color?

melanin
Skin color is caused by a multitude of factors, the brown to tan color of skin is determined by a brown pigment called melanin, which is produced by cells in the epidermis called melanocytes.

What part of the respiratory system does air generally travel first?

The respiratory system starts at the nose and mouth and continues through the airways and the lungs. Air enters the respiratory system through the nose and mouth and passes down the throat (pharynx) and through the voice box, or larynx.

When does a fetus become fully developed in the womb?

Weeks 31 to 34 Your baby grows quickly and gains a lot of fat. Rhythmic breathing occurs, but baby’s lungs are not fully mature. Baby’s bones are fully developed, but are still soft.

When do sex organs start to differ in boys and girls?

The internal sex organs – the testes in boys and the uterus and ovaries in girls – look the same until 9 weeks of pregnancy. The external sex organs – the penis and scrotum in boys, the clitoris and labia in girls – don’t start to differ from each other until about 11 weeks.

When does the baby’s genitals start to form?

The external genitals start out as several small bulges that form between your baby’s legs at 6 weeks of pregnancy. Around the same time, the internal sex organs are forming from a ridge of tissue on each side of your baby’s abdomen.

When does the Baby’s Head Start to grow after conception?

By the end of the ninth week of pregnancy — seven weeks after conception — your baby’s elbows appear. In the ninth week of pregnancy, or seven weeks after conception, your baby’s arms grow and elbows appear. Toes are visible and eyelids form. Your baby’s head is large but still has a poorly formed chin.