Search results for: 'sperm formation animation'

Watch Later 0:03

By: Administrator, Views: 234

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).

Watch Later 0:23

Stress and Immune System Animation

By: Administrator, Views: 9892

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...

Watch Later 1:19

Medullary osmotic gradient - influencing factors

By: HWC, Views: 7019

▪ Maintenance of fluid volume and composition, despite changes in water input and output, is crucial to a healthy life. ▪ Regulation of blood's osmolarity, or solute concentration, is a function of the nephron. • Normal osmolarity is maintained by the ability of the nephron to alter uri...

Watch Later 1:12

Digestive System Animation

By: Administrator, Views: 9917

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...

Watch Later 0:35

Forearm Movement Animation

By: Administrator, Views: 335

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...

Watch Later 0:45

Covalent bonds - role in the body

By: HWC, Views: 6667

A covalent bond is formed when atoms share one or more pairs of electrons. This is opposed to an ionic bond, where electrons are actually transferred from one atom to another. Formation • Atoms fill up the outer orbital by sharing electrons. • Two oxygen atoms sharing electrons form on...

Watch Later 0:22

How Broken Bones Repair Themselves

By: Administrator, Views: 347

Bone healing, or fracture healing, is a proliferative physiological process in which the body facilitates the repair of a bone fracture. Generally bone fracture treatment consists of a doctor reducing (pushing) displaced bones back into place via relocation with or without anaesthetic, stabili...

Watch Later 2:31

Factors that influence muscle tension - Sarcomere length and force, understretched and overstretched

By: HWC, Views: 6676

• Muscle tension generated through the contraction of muscle cells provides the force necessary for the muscular system to function. • The amount of tension produced depends on several factors: • Sarcomere length Frequency of stimulation • Motor unit size • Recruitment of moto...

Watch Later 0:03

Wrist Flexion and Extension Animation

By: Administrator, Views: 530

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

Search Results