tutorial anat physio 2

A plane that divides the body into anterior and posterior parts is a ................ (R)

• frontal

• sagittal

• obligue

• transverse

subcutaneous____ (U)

• connects the dermis to the epidermis

• is the layer of skin where nails are produce

• is the layer of skin where the hair is produced

• contained   approximately half of the body’s stored fat

Which of the process increases (s) heat loss from the body?(U)

•       Increase sweating

•       Dilation of blood vessel

•       Constriction of blood vessel

• a.       Increase sweating and dilation of blood vessel

What would happen if ATP were suddenly unavailable after the sarcomere had begun to shorten? (A)

• Troponin would bind with the myosin head

•                   Nothing. The contraction would proceed normally.

• The myosin heads would be unable to detach from actin

• Actin and myosin would separate completely and unable to recombine

Which of these is a function of blood?(U)

• Clot formation.

• transportation of O2

• Protection against foreign substance.

• all are true

Each haemoglobin molecule can become associated with ........................... oxygen molecules. (R)

• 1

• 2

• 3

• 4

The release of neurotransmitter from synaptic vesicles is dependent on the presence of ____ ion in the synaptic end bulb. (U)

• sodium

• protein

• calcium

• potassium

In depolarization phase of a nerve impulse, voltage gated ion channels open. This action will resulting on ..................................(U)

•                   pumping of K⁺ into neuron.

•                  rush of Na⁺ into the neuron.

• rush of Na⁺ out of the neuron

• equal exchange of Na⁺ and K

When blood glucose levels increase, the secretion of which of these hormones increase? (U)

• insulin

• cortisol

• glucagon

• growth hormones

The exchange of gases and nutrients between blood and tissues is a major function of ___(R)

 

• arteriolles

• arteries

• capilaries

• veins