Human Anatomy and Physiology : Gross Anatomy
Study concepts, example questions & explanations for Human Anatomy and Physiology
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Example Questions
Example Question #391 : Gross Anatomy
Which nerve passes through the optic canal?
Cranial nerve X
Opthalmic branch of cranial nerve V
Cranial nerve II
Cranial nerve III
Cranial nerve IV
Cranial nerve II
The optic canal is also referred to as the optic foramen. It is a short canal through the lesser wing of the sphenoid bone. The optic canal transmits the optic nerve (cranial nerve II) and the ophthalmic artery into the orbital cavity.
Example Question #184 : Bones
A portion of the trigeminal nerve emerges from which foramen?
Foramen magnum
Cribriform plate
Jugular foramen
Foramen ovale
Obturator foramen
Foramen ovale
The three branches of the trigeminal nerve, the ophthalmic, maxillary, and mandibular branches leave the skull through three separate foramina. The opthalmic branch exits through the superior orbital fissure, the maxillary branch exists through the foramen rotundum, and the mandibular branch exits through the foramen ovale.
The spinal cord, accessory nerve, and various arteries pass through the foramen magnum. The cribriform plate allows the emergence of the olfactory nerve. The obturator foramen is in the hip.
Example Question #185 : Bones
Where is the lambdoid suture located?
Between the parietal bones and the temporal bones
Between the parietal bones and the occipital bone
Between the temporal bones and the parietal bones
Between parietal bones
Between the frontal bone and the parietal bones
Between the parietal bones and the occipital bone
Humans skulls contain sutures, which are dense fibrous connective tissue joints that holds the bony plates of the skull together. The lambdoid suture connects the parietal bones with the occipital bone. This suture is actually continuous with the occipitomastoid suture.
Example Question #184 : Bones
Which bones are a part of the axial skeleton?
Bones of the head
Bones of the arms
Bones of the legs
Bones of the fingers
Bones of the head
The skeletal system is divided into the axial skeleton and the appendicular skeleton. The axial skeleton consists of bones of the head, ribs, vertebral column, and sternum. In contrast, the appendicular skeleton consists of bones of the extremities, including the fingers, arms, and legs.
Example Question #394 : Gross Anatomy
Which structure separates the parietal bones from the occipital bone?
None of these
Coronal suture
Lambdoid suture
Inferior nuchal line
Sagittal suture
Lambdoid suture
The lambdoid suture is located between the parietal bones and the occipital bone. When looked at with the sagittal suture from a posterior view, it creates a lambda shape.
Example Question #62 : Identifying Bones Of The Skull
Which of the following is not a part of the ethmoid bone?
Perpendicular plate
Crista galli
Middle nasal concha
Pterygoid processes
Cribriform plate
Pterygoid processes
The pterygoid processes are inferior projections from the greater wings of the sphenoid bone. They attach to muscles that help with mastication.
Example Question #63 : Identifying Bones Of The Skull
Which cranial bone forms the posterior base of the skull?
Occipital
Parietal
Frontal
Temporal
Mandible
Occipital
The occipital bone is located at the posterior aspect of the head, inferior to the parietal bones. It contains a large opening called the foramen magnum which allows connection of the brain and spinal cord.
Example Question #191 : Bones
Which of the following is not an opening of the sphenoid bone?
Supraorbital notch
Foramen ovale
Foramen rotundum
Foramen spinosum
Optic canal
Supraorbital notch
The supraorbital notch is located on the frontal bone at the superior and medial margin of the orbit, whereas the sphenoid bone makes up part of the inner bony orbit.
Example Question #65 : Identifying Bones Of The Skull
Which bone of the skull articulates with all the others listed?
Parietal
Frontal
Temporal
Sphenoid
Ethmoid
Sphenoid
The sphenoid bone is a central wedge that spans across the cranial floor. It is shaped like a bat with its wings spread and articulates with every bone in the skull.
Example Question #191 : Bones
What suture separates the frontal and parietal bones?
Zygomatic suture
Squamous suture
Lambdoid suture
Occipital suture
Coronal suture
Coronal suture
The correct answer is the coronal suture. It joins as a child develops and divides the frontal and parietal bones. The squamous suture separates the temporal and the parietal bones. The lambdoid suture separates the parietal and occipital bones. The zygomatic and occipital sutures do not exist.
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