Answer:
The correct answer is a. True
Explanation:
The heart is made up of three-layer outer layer epicardium, middle layer myocardium, and inner layer endocardium. Outer to the epicardium layer pericardium membrane is present which protects the heart and consists of two-layer, outer fibrous pericardium and inner pariental serous pericardium.
Epicardium is the thin outer layer of the heart and also called the visceral layer of the serous pericardium. Between parietal serous pericardium and visceral serous pericardium(epicardium) pericardial cavity is present which is filled with pericardial fluid which helps in friction reduction between these two membranes.
Answer:
"The baby will need an exchange transfusion with type A blood."
Explanation:
The mother would need to be enlightened about how ABO incompatibility works and the necessary solution. She said "The baby will need an exchange transfusion with type A blood." However ABO compatibility happens when the mother has type O blood group and the neonate is either A, B, or AB and unless the bilirubin concentration reaches dangerous levels such as (~20 mg/dL or 342 umol/L), there is no need for an exchange transfusion. If an exchange transfusion does become necessary, type O blood is used or treatment with phototherapy.
C. Rugs and steps are slip-resistant
Answer:
True
Explanation:
Pacemaker cells, unlike other neurons in the body, can depolarized themselves (and therefore can fire action potentials) without the need of an external innervation of the autonomic nervous system.
Each class of pacemaker cells has its own intrinsic rate.
For example, sinoatrial node rate is 60-100 bpm (the normal heart frequency).
The atrioventricular node is also part of the electrical conduction system of the heart. When the sinoatrial node fails, atrioventricular node takes the lead (40-60 bpm).
