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Structure of Amino Acid, Peptide Bonds & Polypeptides

By: HWC, Views: 6112

Here are the molecular formulas of three different amino acids. All amino acids share this backbone. The main difference between every amino acid is the side groups seen here, and these side groups give each of the amino acids their different characteristics. But before we get into that, let's ...

Trunk Movement Animation

By: Administrator, Views: 474

Muscles responsible for trunk and abdominal movement.

Hand Opposition Animation

By: Administrator, Views: 229

Opposition is a composite of the following two motions: Rotation of the thumb into pronation so that the pulp fingers of the thumb and index fingers face one another. Abduction or lifting of the thumb away from the palm of the hand (palmar abduction).

Bone elongation - processes at the epiphyseal plate

By: HWC, Views: 6890

• Interstitial lengthening occurs in only certain bones, primarily those of the appendages. • Such lengthening takes place at the epiphyseal plate, a layer of hyaline cartilage in the metaphysis of a growing bone. 1. Zone of resting cartilage. • Consisting of a hyaline cartilage pa...

Stress and Immune System Animation

By: Administrator, Views: 9860

How stress and the immune system are linked. Immune response declines with age, limiting body's ability to identify and fight foreign substances. Loss of thymus cortex leads to reduced production of T lymphocytes, including T cells, NK cells, B lymphocytes. Frequency and severity of infectio...

Digestive System Animation

By: Administrator, Views: 9888

Digestive system contains both primary and accessory organs for the conversion of food and fluids into a semiliquid that can be absorbed for the body to use. Three main functions: - Digestion - Absorption - Elimination With aging: - Digestive system becomes less motile. - Glandular sec...

Forearm Movement Animation

By: Administrator, Views: 330

Muscles of both the upper arm and forearm control movement of the forearm. The biceps brachii flex the forearm and work with the supinator of the forearm to rotate it so the palm faces upward. The pronator teres and quadratus control pronation, or rotation of the forearm so that the palm faces do...

Major Elements in Biological Molecules: Nucleic acids

By: HWC, Views: 6596

DNA and RNA are nucleic acids (polymers of nucleotides). Two polymers with complementary nucleotide sequences can pair with each other. This pairing endows nucleic acids with the ability to store, transmit, and retrieve genetic information. Two strands of DNA pair by hydrogen bonding. A compon...

Wrist Flexion and Extension Animation

By: Administrator, Views: 525

Flexion describes the movement of bending the palm down, towards the wrist. Extension describes the movement of raising the back of the hand.