A&P Lab Practical 2

_______ are the neuron processes that generate and conduct nerve impulses.

Axons

The diaphysis of a long bone is covered by ________.

Endosteum

The pelvis consists of ________.

Two hip bones, sacrum, coccyx

How many pairs of ribs are there?

12

Severe injuries to the __________ plexus cause weakness or paralysis of the entire upper limb.

Brachial

Directly under the occipital lobes of the cerebrum is a large cauliflower-like structure known as the __________.

Cerebellum

These bones form the pectoral girdle.

Clavicle and Scapula

Deep grooves within the cerebral hemispheres are known as _______

Fissures

A condyle differs from an epicondyle in that the condyle ________.

Helps form a joint

Vertebrae belong to this category of bones.

Irregular

Fontanels are ________.

fibrous membranes in a fetal skull

You are studying a pelvis that is wide and shallow. The acetabula are small and far apart. The pubic arch/angle is rounded and greater than 90°. It appears to be tilted forward, with a wide, short sacrum. Is this a male or a female pelvis? __________

Female

The strongest, heaviest bone of the body is in the thigh. It is the __________.

Femur

This bone articulates with the acetabulum.

Femur

The arm consists of one long bone, the __________.

Humerus

A trochanter is a ________.

Large, irregularly-shaped projection

The structural unit of compact bone is the __________.

Osteon

The __________ , or "knee cap," is a sesamoid bone that is found within the quadriceps tendon.

Patella

All of the following are short bones except ________.

Phalanges

The hip (coxal) bones articulate with each other at the ________.

Pubic Symphysis

Name the bone or bones of the forearm.

Radius and Ulna

Neuroglia of the peripheral nervous system include __________.

Satellite cells and Schwann cells

The __________ , on the posterior thorax, are roughly triangular in shape. They have NO direct attachment to the axial skeleton but are held in place by trunk muscles.

Scapulae

The _____ nerve is the largest nerve from the sacral plexus.

Sciatic

A fontanelle __________.

Soft spot between the skull bones of an infant

The ________ is a median posterior projection arising at the junction of two laminae of the vertebral body.

Spinous Process

The medial end of the clavicle articulates with the ________.

Sternum

Which of the following bone belongs to the axial skeleton and is a flat bone?

Sternum

The __________ consists of the brain and spinal cord.

Central Nervous System

Which of the following bone belongs to the appendicular skeleton?

Clavicle

__________ bone looks smooth and homogeneous.

Compact

Which of the following structures is an attachment site for muscles or ligaments?

Crest

Seven pairs of ribs articulate ________ with the sternum.

Directly via costal cartilages

These branching neuron processes serve as receptive regions and transmit electrical signals toward the cell body. They are __________.

Dendrites

The seven bones of the neck are called __________ vertebrae.

Cervical

How many bones are found in the arm or brachial region?

1

Your X-ray examination reveals that you have fractured your fibula. Your physician remarks, "Well, it's better than breaking your tibia." Explain why a fracture of the tibia would be worse than a fracture of the fibula.

The tibia supports more weight than the fibula, and there is less soft tissue around the bone so the break is often an open fracture more susceptible to infection.

This primary curvature of the spine is located in the chest region.

Thoracic

To what region of the vertebral column does this vertebra belong?

Thoracic

This bone bears the medial malleolus

Tibia

Neuron fibers (axons) running through the central nervous system form __________ of white matter.

Tracts

Nervous tissue is made up of __________ main cell types.

2

How many bones are found in the leg?

4

This part of the coxal bone bears your weight when you sit.

Ischial Tuberosity

An exaggerated curvature of this region of the vertebral column causes lordosis

Lumbar

The inferior region of the brain stem, the __________ houses many vital autonomic centers involved in the control of heart rate, respiratory rhythm, and blood pressure.

Medulla Oblongata

The ________ is the storage area for yellow marrow in an adult bone.

Medullary Cavity

Because the spinal nerves arise from fusion of the ventral and dorsal roots of the spinal cord, and contain motor and sensory fibers, all spinal nerves are considered _______.

Mixed Nerves

__________ are the functional units of nervous tissue.

Neurons

________ are the telescoping tubes of matrix (concentric lamellae) with their central canals that form a large part of compact bone.

Osteons

In addition to supporting and protecting the body, the skeleton provides this function as well.

The bones store fat, red marrow, and calcium.

Neurons can be classified according to function. __________ or motor neurons carry electrical signals from the central nervous system primarily to muscles or glands.

Afferent