Anatomy 6B

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Anatomy 6B

Aorta

The largest artery in the body.

Arteries

Thick-walled, muscular, flexible tubes that carry oxygenated blood away from the heart to the arterioles.

Artrium

Thin-walled, upper chamber of the heart through which blood is pumped to the ventricles. There is a right and a left.

Autonomic Nervous System (ANS)

Nervous system that controls the involuntary muscles; it regulates the action of the smooth muscles, glands, blood vessels, heart, and breathing.

Axon

Sends impluses away from the cell body to other neurons, glands, or muscles.

Blood

Nurtritive fluid circulating through the circulatory system and is considered connective tissue. There are 8-10 pints.

Brain

The largest and most complex mass of nerve tissue in the body.

Cerebum

Makes up the bulk of the brain.

Cervical Nerve

Affects the side of the neck and the platysma muscle.

Circulatory System

Controls the steady circulation of the blood through the body by means of the heart and blood vessels. Also known as cardiovascular system or vascular system.

Commom Carotid Arteries

Main source of blood supply to the head, face, and neck. Located on either side of the neck.

Dendrites

Nerve fibers extending from the nerve cell that receive impluses from other neurons.

Diencephalon

Located in the uppermost part of the midbrain and has two main parts, called Thalamus and Hypothalamus

Digestive System

Responsible for changing food into nutrients and waste.

Eleventh Cranial Nerve

Type of motor nerve that controls the motion of the neck and shoulder muscles. Also known as the accessory nerve.

Endocrine Glands

Release secretions called hormones directly into the bloodstream, which in turn influence the welfare of the entire body. Also known as ductless glands.

Endocrine System

Group of specialized glands that affect the growth, development, sexual activities, and health of the entire body.

Exocrine Glands

Produce a substance that travels through small. tube-like ducts. Sweat and oil glands of the skin belong to this group. Also known as duct glands.

Facial Artery

Supplies blood to the lower region of the face, mouth and nose. Also know as external maxillary artery.

Facial Nerve (VII)

Branches of this nerve innervate the taste buds, the skin of the external ear, and the salivary and lacrimal glands. Also controls facial expressions.

Fifth Cranial Nerve

The largest of the cranial nerves. Chief sensory nerve of the face, and it serves as the motor nerve of the muscles that control chewing. Consists of three branches.

Frontal Artery

Supplies blood to the forehead and upper eyelids.

Heart

Often referred to as the bodys pump. Muscular, cone-shaped organ that keeps the blood moving within the circulatory system.

Interstitial Fluid

Blood plasma found in the spaces between tissue cells.

Lymph

Clear, yellowish fluid that circulates the lymph spaces of the body; carries waste and impurities away from the cells.

Mandibular Nerve

Affects the muscles of the chin and lowe lip

Maxillary Nerve

Affects the upper part of the face.

Mitral Valve

or bicuspid valve; a flap like structure that prevents the back flow of blood as it is pumped from the left atrium to the left ventricle

Nerves

Whitish cords, made up of bundles of nerve fibers held together by connective tissue, through which impluses are transmitted.

Nervous System

Exceptionally well-organized system that is responsible for coordinating all the many activities that are performed by the body.

Neuron

Primary structured unit of the nervous system. Is composed of a cell body and nucleus.

Ophthalmic Nerve

Affects the skin of the forehead, upper eyelids, and interior portion of the scalp, orbit, eyeball and nasal passage.

Pancreas

Secretes enzyme-producing cells that are responsible for digesting carbohydrates, proteins, and fats. Cells within the control insulin and glucagon production.

Pericardium

The heart is enclosed by this membrane.

Pituitary Gland

Most complex organ of the endocrine system. It affects almost every physiologic process of the body.

Platelets

Much smaller than red blood cells. They contribute to the blood-clotting process, which stops bleeding. Also known as thrombocytes.

Posterior Auricular Artery

Supplies the scalp, the area behind and about the ear, and the skin behind the ear.

Posterior Auricular Nerve

Affects the muscles behind the ear at the base of the skull.

Pulmonary Circulation

Sends the blood from the heart to the lungs to be oxygenated

Reflex

Automatic nerve reaction to a stimulus that involves the movement of an impluse from a sensory receptor along the afferent neuron to the spinal cord and a responsive impluse back along an efferent neuron to a muscle, causing a reaction.

Seventh Cranial Nerve

Is the chief motor nerve of the face. Also called the facial nerve.

Spinal Accessory Nerve (XI)

This nerve brings about movement in the head and shoulders. Also is involved in the production of voice sounds.

Supraorbital Nerve

Affects the skin of the forehead, scalp, eyebrow, and upper eyelid.

Systemic Circulation

Carries the oxygenated blood from the heart throughout the body and ack to the heart again.

Thyroid Gland

Controls how quickly the body burns energy.

Transverse Facial Artery

Supplies blood to the skin and masseter

Trigeminal Nerve (V)

Contains sensory fibers that relay signals from the head, face, and teeth. (Chewing muscles). The branches are known as opthalmic, mazillary, and mandibular.

Vascular System

Consists of the heart, arteries, veins, and capillaries for the distribution of the blood throughout the body.

Veins

Thin-walled blood vessels that less elastic that arteries. Contain cup-like valves that keep the blood flowing in one direction. Located closer to the skin surface.

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