Which structure secretary’s hormones directly into the bloodstream without using a duct a) lacrimal gland b) adrenal gland c) oil gland d) salivary gland

The correct answer is option B, that is, adrenal glands.  

The endocrine glands also are known as ductless glands as they discharge hormones straightforwardly into the bloodstream. The secretions are discharged into the bloodstream for the brisk reaction. Adrenaline is secreted from adrenal glands, and gets discharged directly into the bloodstream and influences the ANS that monitors different activities of the body like heart rate, dilation of the pupil, secretion of saliva and sweat.  

answer: wheres the options

explanation:

ans.

in united states (us), the first leading cause of death for both women and men is heart diseases that leads to more than half of the deaths. heart diseases develop due to narrow arteries, buildup of plaque in blood capillaries that arises difficulties in blood flow.

the second leading cause of deaths in us is cancer that affects individuals of all ages. it develops due to uncontrolled growth and spread of tumor cells, which results in death if the not controlled or treated.

the third leading cause of deaths in us is copd or chronic obstructive pulmonary disease. it includes difficulty in breathing, chest infections, and persistent cough. smocking is a leading cause of copd and around 80% of copd deaths occur due to smoking.

thus, the correct answer is 'option). cancer, copd, and heart disease.'