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.
Answer:
C. H and O
Explanation:
Almost 99% of the human body's mass is made up of six elements: oxygen, carbon, hydrogen, nitrogen, calcium and phosphorus, in that order.
Element Symbol % in body
Oxygen O 65.0
Coal C 18.5
The human body is composed of 60% water, that is, H2O.
Answer:
Trochanter
Explanation:
All of these choices are colletively known as bone markings.
Trochanter is an example of a site for a muscle or ligament attachment. We have two trochanters, the greater trochanter and the lesser trochanter. You can find these in the femur, or the thighbone. These are points where the muscle of the hips and the muscle of the thighs are attached.
Eliminating the rest:
Sinus is a cavity or a sac of air, common in the cranium (skull).
Fossa is a depression on the bone.
Foramen is an openning in the bone. You can see this in the vertebral column. There's a space or hollow area in the vertebrae where the spine runs through.
Groove is a furrow or a line that runs along the bone. It is gives space for a blood vessel to fit in so it won't get compressed by the muscles around it.
<span>An endocrine gland secretes its products, for example, hormones, directly into the blood but a</span><span>n exocrine gland secretes its products for example enzymes, into ducts that lead to the target tissue.
I hope this helps!!</span>
