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).
Answer:
All options are correct.
Explanation:
Fibers may be defined as the type of carbohydrate that cannot be digested by the body. Two main types of fiber are soluble fibers and the insoluble fibers.
Fibers play an important role in the body. Fibers manage the blood sugar level and prevent constipation. The fibers also helps in the reduction of the absorption of cholesterol in the body. Insoluble fibers prevent constipation and soluble fibers maintains blood sugar level.
Thus, all the given options are correct.
Answer:
A tissue is an ensemble of similar cells and their extracellular matrix from the same origin that together carry out a specific function.
There are 4 basic types of tissue: connective tissue, epithelial tissue, muscle tissue, and nervous tissue
Connective tissue supports other tissues and binds them together (bone, blood, and lymph tissues). Epithelial tissue provides a covering (skin, the linings of the various passages inside the body).
Answer:
maybe 48 hours but it still kinda remains
Explanation:
for example if you smoke marijuana and you take a drug test you may not be high from it after a couple of days but you would most likely fail it because the smell of it remains in your hair within 30 with at least 5% remaining
Answer:
C) 30 minutes
Explanation:
The PAG (physical activity guidelines) recommends at least 30 minutes of physical activity in a daily basis.
