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Purkinje fibers also have the ability of firing at a rate of 20–40 beats per minute if upstream conduction or pacemaking ability is compromised. [9] In contrast, the SA node in normal state can fire at 60-100 beats per minute. [9] In short, they generate action potentials, but at a slower rate than the sinoatrial node. [9]
The mesothelium is a membrane composed of simple squamous epithelial cells of mesodermal origin, [2] which forms the lining of several body cavities: the pleura (pleural cavity around the lungs), peritoneum (abdominopelvic cavity including the mesentery, omenta, falciform ligament and the perimetrium) and pericardium (around the heart).
Psalm 39 is the 39th psalm of the Book of Psalms, beginning in English in the King James Version: "I said, I will take heed to my ways, that I sin not with my tongue".The Book of Psalms is part of the third section of the Hebrew Bible, and a book of the Christian Old Testament.
There are four basic types of animal tissues: muscle tissue, nervous tissue, connective tissue, and epithelial tissue. [5] [9] All animal tissues are considered to be subtypes of these four principal tissue types (for example, blood is classified as connective tissue, since the blood cells are suspended in an extracellular matrix, the plasma). [9]
The Book of Psalms (/ s ɑː (l) m z /, US also / s ɔː (l) m z /; [2] Biblical Hebrew: תְּהִלִּים, romanized: Tehillīm, lit. 'praises'; Ancient Greek: Ψαλμός, romanized: Psalmós; Latin: Liber Psalmorum; Arabic: زَبُورُ, romanized: Zabūr), also known as the Psalter, is the first book of the third section of the Tanakh (Hebrew Bible) called Ketuvim ('Writings'), and a ...
A champion rower has died while free-diving. According to a GoFundMe page, shared last week, 27-year-old Austin Regier died in the Philippines on November 14, 2024. "He was swimming with new ...
Haematopoietic stem cells (HSCs) reside in the medulla of the bone (bone marrow) and have the unique ability to give rise to all of the different mature blood cell types and tissues. [ 2 ] [ 3 ] HSCs are self-renewing cells: when they differentiate, at least some of their daughter cells remain as HSCs, so the pool of stem cells is not depleted.
Renowned for its lavish holiday decorations, homeowners in this affluent Brooklyn neighborhood have been known to spend upwards of $20,000 on their elaborate setups, complete with life-sized ...