Overview The human body can regulate its function responding to the change of its environment. Temperature is one of the factors which can modulate the body function. Refer to the related lectures and other resources; answer the followed questions (question 1-5 need at least 400 words together): Q1 In case of cold weather how does human body detect the coldness? Explain the signal detection, delivery, processing and involved cells, tissues and organs.

Overview The human body can regulate its function responding to the change of its environment. Temperature is one of the factors which can modulate the body function. Refer to the related lectures and other resources; answer the followed questions (question 1-5 need at least 400 words together): Q1 In case of cold weather how does human body detect the coldness? Explain the signal detection, delivery, processing and involved cells, tissues and organs.

  The chief brain mechanisms for heat regulation are established … Read More...
Which feature(s) helps distinguish the subcutaneous layer from the epidermis and dermis? Select one: The subcutaneous layer is composed of loose connective tissue and adipose tissue. The subcutaneous layer is composed of loose connective tissue and contains various sensory receptors. The epidermis is composed of loose connective tissue and adipose tissue. The subcutaneous layer is composed of fibrous connective tissue, such as collagen and elastic fibers. The subcutaneous layer contains melanocytes which will give skin its’ pigmentation. Feedback

Which feature(s) helps distinguish the subcutaneous layer from the epidermis and dermis? Select one: The subcutaneous layer is composed of loose connective tissue and adipose tissue. The subcutaneous layer is composed of loose connective tissue and contains various sensory receptors. The epidermis is composed of loose connective tissue and adipose tissue. The subcutaneous layer is composed of fibrous connective tissue, such as collagen and elastic fibers. The subcutaneous layer contains melanocytes which will give skin its’ pigmentation. Feedback

Which feature(s) helps distinguish the subcutaneous layer from the epidermis … Read More...
Which of the following is NOT true about oncogenes? Select one: They are normal genes that have undergone a mutation. They cause growth factors or growth factor receptors on a cell to malfunction. When mutated oncogenes turn into proto-oncogenes. They cause a cell to divide repeatedly. They are not alien to the cell.

Which of the following is NOT true about oncogenes? Select one: They are normal genes that have undergone a mutation. They cause growth factors or growth factor receptors on a cell to malfunction. When mutated oncogenes turn into proto-oncogenes. They cause a cell to divide repeatedly. They are not alien to the cell.

Which of the following is NOT true about oncogenes? Select … Read More...
If a lung is punctured in a car accident, that lobe fails to inflate even though there is no obstruction of the air passageway to that lobe. Why? Select one: The trauma must have damaged the nerve path controlling ribs on that side of the lung. Negative feedback prevents the ribs and diaphragm on that side from causing pain. When the chest volume expands, air can now rush in through the puncture without filling the alveoli. Mucus or blood must be filling the lobe. Stimulation of stretch receptors in the alveolar walls initiate inhibitory nerve impulses.

If a lung is punctured in a car accident, that lobe fails to inflate even though there is no obstruction of the air passageway to that lobe. Why? Select one: The trauma must have damaged the nerve path controlling ribs on that side of the lung. Negative feedback prevents the ribs and diaphragm on that side from causing pain. When the chest volume expands, air can now rush in through the puncture without filling the alveoli. Mucus or blood must be filling the lobe. Stimulation of stretch receptors in the alveolar walls initiate inhibitory nerve impulses.

If a lung is punctured in a car accident, that … Read More...