Nervous System

Because your penis is controlled by your autonomic nervous system, not by conscious thought. You also do not fully control the eating of your heart. The autonomic nervous system is a division of the peripheral nervous system that supplies smooth muscle and glands, and thus influences the function of internal organs. The autonomic nervous system is a control system that acts largely unconsciously and regulates bodily functions such as the heart rate, digestion, respiratory rate, pupillary response, urination, and sexual arousal.

Thermoreceptors in the nerve cells of the mouth respond to temperature of objects. When these receptors are activated, ion channels are opened and action potentials are sent to the central nervous system. Cool objects/food activates these thermoreceptors. However, if something that is too cold enters the mouth, nociceptors will be activated. These receptors register pain and inform the central nervous system that the object is harmful.

Motor neurons

Yes.

Serotonin

habit

Conduction velocities are specific to each person and depend largely on an axon's diameter and the degree to which that axon is myelinated. Some myelinated neurons conducting at speeds up to 120 m/s (432 km/h).

The diaphragm's contractions are regulated by the phrenic nerve. A diaphragm are the muscle that inserts on the central tendon.

electroencephalograph

The sympathetic division of the autonomic nervous system is responsible for preparing you body for the fight or flight response.

The role of the hypothalamus.Combination of the brain and nervous as well as muscular and cardiovascular system. The brain initiates the process and everything becomes innate from there...the nervous system delivers the fight or flight signals, the heart beats faster and the muscles tense in order to release energy and react quicker to the organism's surroundings

Adrenaline prepares your body for the fight response.

Answer: Vertebrae

Parasympathetic

It's actually a take on an old nursery rhyme. Its a play on words and should not be read;

Twelve pairs hanging high twelve men riding by each man grabs a pear but leave a dozen hanging there. How is this possible?

Its twelve pairs of pears and each rider takes one pear, leaving the other 12 there...a dozen.

sensory nerve

no

muscular and skeletal

^^ FAIL.

The two organ systems that control and coordinate the 50 trillion cells in a human are actually the nervous system, and endocrine system. 100% positive. Go anatomy and physiology kids:)

Tears are secreted by the lacrimal glands.
tears
The secretions of the lacrimal gland are more commonly known as TEARS. The lacrimal gland is what produces the tears that lubricate and clean your eye.
Tears

yes

h

Nervous system.

• Motor neurons move signals from the central nervous system to a central organ or point, which in this case are muscle and gland cells. This signal makes the cells contract and allow for physical movement (locomotion and other movements such as from the face or the neck). Motor nerves contain axons of somatic and branchial motoneurons. Sensory neurons move signals from the central organ or point to the central nervous system. They receive sensory stimuli and sends the information to the CNS in order to experience how something feels and if it is painful, smooth, rough etc. They are made of sensory fibers: mechanoreceptors fibers that sense body movement and pressure placed against the body and nociceptor fibers that sense tissue injury.
• Association Nerves are neurons found in the brain and spinal cord that conduct impulses between neurons such as from afferent to efferent neurons. Called also interneurons. Connector Nerves process information that is being sent between the body, brain and spinal cord. The connector neuron

receptor

Efferent nerves.
the motor neuron transmits the impulse away from the CNS and to the effector

Stimulation of the Parasympathetic nervous system causes an increase in digestive tract mobility.

When stimulated the parasympathetic post-ganglionic neurons release a hormone called Acetylcholine. This causes the Digestive tract to increase its contractions.

Counteracting this increase in digestive tract mobility is the sympathetic nervous system, which releases a hormone called noradrenaline which slows down the digestive tracts contractions.

This is how the Parasympathetic Nervous System gets the name "rest and digest"

sympathetic