B cells produce antigen
t cell are helper,killer,memory cells
they hold memory of pathogens i the system
False! The endocrine system carries out its job by releasing hormones which then travel through the blood stream to target cells where they interact and create a hormonal change in those cells. the main organs of the endocrine system are the pituitary gland, the hypothalamus, and the thyroid.
The number of chromosomes in a female
scorpion’s egg cells have half as many chromosomes as compared in her body
cells. Chromosome is a single long molecule of DNA wound around proteins called
histones. It is
made up of DNA wrapped around proteins.
Dr. Blackwell caused rats to stop breathing when he lesioned their MEDULLA.
When doctor Blackwell induced a lesion in the rats' medulla, he discovered that the rats stopped breathing. He explained this observation by saying that the medulla has functional role to play in the breathing process of rats.
I think the answer your looking for is smooth muscles and cardiac muscles. They only muscles that can be voluntarily controlled is skeletal muscles. Let me know if this is what you're looking for:)