Blood Cells, Hemostasis, and the Cardiac Cycle: A Comprehensive Guide
Blood Cells
Functions
- Transport of gases, primarily oxygen
- Obtain energy by glycolysis, since they have virtually no organelles inside
- The basic protein is hemoglobin, whose prime role is oxygen transport between lungs and cells
- In humans, the hemoglobin should be within the erythrocyte to maintain (only a small part is outside and does not last long)
- Carbonic anhydrase has a key role in transport of CO2
- Hemoglobin is the main blood buffer. Most of this function is due to hemoglobin
Iron Metabolism
Most
Read MoreDNA Structure and Function: A Comprehensive Guide
DNA (DNA) Concept:
Chemically are polynucleotides consisting of d-AMP, d-GMP, d-CMP and d-TMP. The nucleotides of DNA have neither uracil nor ribose, as mentioned above.
Features:
The cellular DNA have a high molecular mass, many millions of daltons. For example: the human genome consists of pairs of nucleotides 3×109. This makes them a very long molecules, for example, 1.7 ?M in the case of poliovirus and 2.36 m if we add up all the DNA of all chromosomes in a human cell. DNA was first isolated
Read MoreProteins, Enzymes, and Carbohydrates
General Properties of Proteins
Proteins have diverse functions, including:
- Enzymatic activity
- Carrying capacity
- Energy reserve
- Contractile capacity
- Structural support
- Defensive or immune function
- Regulatory properties
Some proteins incorporate non-protein substances, forming protein conjugates. The amino acid portion is called the prosthetic group. Glycoproteins, lipoproteins, and metalloproteins are the most important conjugated proteins.
General Structure of Proteins
Primary Structure: The amino acid sequence
Read MoreNutrition Basics
1. What is Nutrition?
Nutrition is the process by which our body extracts required nutrients from food, transforms them, and incorporates them into body structures. It allows living beings to obtain the matter and energy necessary to stay alive. This involuntary and unconscious process uses matter to build and renew our biological structures and energy to carry out vital functions.
2. What are the Functions of Nutrients?
Energetic
These nutrients provide energy to develop vital functions and provide
Read MoreHuman Anatomy: A Comprehensive Guide to the Body’s Systems and Functions
Dental Formula
What is a Dental Formula?
Anatomy of the Salivary Glands, Pharynx, Esophagus, and Stomach
Salivary Glands
Submandibular Gland
This gland is located on the underside of the floor of the mouth, surrounding the rear edge of the mylohyoid muscle and resting on its upper surface. The excretory duct, or Wharton’s duct, runs forward under the tongue and empties on each side of the midline.
Sublingual Gland
The smallest of the salivary glands, the sublingual gland sits above the mylohyoid muscle, slightly lateralized. It has several excretory ducts, the most important being the duct of Rivinus.
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