Knowledge Checks Oral Embryo CH. 1-4

Blood is a type of connective tissue.

True

Name 1 of the 2 proteins that enable contractions vital to muscle formation

myosin

Which part of the neuron conducts nerve impulses away from the nerve cell body?

axon

This layer of epithelial tissue covers the external surfaces of the body

epidermis

____ receive and conduct impulses and regulate muscle and gland activity.

neurons

Which connective tissue is responsible for gas transport?

blood

The elimination of waste and heat and protection against invasion are provided by which organ?

Integumentary

The ____ and ______ make up the CNS, the control and communication center of the body.

brains and spinal cord

The ______ separates the oral and nasal cavities.

palate

Defects of the anterior brain may result in developmental alteration of the facial form because the face develops on the surface of the brain

True

The eyes and the maxillary processes come to the front of the face in which week of development?

6th week

Facial development only takes place in weeks 6 through 7.

False, weeks 4-7

The protective covering of the brain is formed by ____ bones.

membrane

For the first 20 weeks of prenatal life, the articulation of the mandible is the contact point of the ____ and the malleus.

incus

Which cranial nerve enters the mandible to innervate the muscles of mastication?

5th

The muscles of the ____ arch become the muscles of mastication.

1st

The ______ arch vessels become the common carotid arteries which supply the neck, face, and brain.

3rd

The ____ pharyngeal pouch becomes the inferior parathyroid and thymus.

3rd

Which pharyngeal arch forms the facial muscles, vessels, and hyoid bone?

2nd

Grooves/clefts called _________ seperate each arch within the pharnyx.

pharyngeal pouches

The heart begins to beat at the end of which week of development?

4th

The first pharyngeal arch is also termed the ______

mandibular arch

The oral pit first appears in the _____ week of development, when the neural plate bends ventrally as neural folds develop to form the forebrain?

4th

_____ muscl enables all actions of the body, such as standing and walking.

striated

The control/regulation of blood pressure is the major function of which system?

Urinary

This system carries oxygen to the cells in all areas of the body and returns carbon dioxide from these cells to the lungs.

vascular

Which system provides the framework to which all muscles and ligaments of the body are attached?

skeletal

The muscles of the tongue and other head muscles develop from blocks of ___ called occipital myotomes.

mesoderm

The tongue is innervated by one cranial nerve, the trigeminal nerve.

False

The body and base of the tongue are separated by a V-shaped groove called the ______.

terminal suclus

A ____ is the most common type of facial malformation.

cleft lip

This condition is believed to occur due to pressure from the adjacent heart

mandibular cleft

Which cranial nerve gives function to the muscles of facial expression, controls secretion of saliva, and aids in taste?

facial VII

The formation of ____ represents the first change in the shape of the embryo's body from a flat sheet of cells.

neural folds

_____ forms the neural plate, then the neural tube that will eventually become the brain and spinal cord.

ectoderm

_____ is the process of the cells of the zygote enzymatically digesting the uterine endometrium, allowing deeper penetration of the blastocyst.

implantation

The _______ is the 2-8 week period when the mass of cells begin to take the form of an embryo. The head, face, and oral structures begin to develop.

embryonic period

Each tissue originates from the mesoderm, EXCEPT one. Which is the exception?

Liver

In which phase of cell division is DNA synthesis is completed (8-10 hours)?

S phase

The fundamental process of cell division where a eukaryotiuc cell separates its duplicated chromosomes into 2 identical nuclei, resulting in 2 genetically identical daughter cells is termed ________.

mitosis

The process of the reduction of the number of chromosomes to half the normal number in the germ cells is termed ______>

meiosis

Apoptosis is the usual accompaniment of embryonic growth and differentiation.

True

______ contain acid hydrolases, hyrogen peroxide, and digestive enzymes to break down substances inside/outside the cell. Found in all cells except RBC's.

lysosomes